It's about one-tenth as heavy as The Sears Tower
In other words, 24,600,000 kilograms is 0.12190 times the weight of The Sears Tower, and the weight of The Sears Tower is 8.2030 times that amount.(officially "Willis Tower" as of 2009) (Chicago, Illinois)
The Willis Tower weighs approximately 201,800,000 kilograms. The outer wall surface of the Tower is covered with black anodized aluminum panels which would total 110,000 sq. m (28 acres) if laid out together.
It's about one-fifteenth as heavy as The Empire State Building
It's about one-thirty-fifth as heavy as The Golden Gate Bridge
In other words, the weight of The Golden Gate Bridge is 32.70 times 24,600,000 kilograms.(San Francisco, California and Marin County, California) (Post 1986 weight reduction; total weight of bridge, anchorage, and approaches)
Following the completion of the 1986 project to eliminate excess material, the total weight of the Golden Gate Bridge — including its anchorages and approaches — is 805,000,000 kilograms. The two main cables in the spanning the bridge are spun out of a total of 129,000 km (80,200 mi) of wire.
It's about one-two-hundred-fiftieth as heavy as The Great Pyramid of Giza
In other words, the weight of The Great Pyramid of Giza is 240 times 24,600,000 kilograms.(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt)
The Great Pyramid of Giza has an estimated mass of 5,900,000,000 kilograms. The 2,300,000 stones used in the construction of the pyramid weighed an average 2,300 kilograms and were quarried from distances of up to 805 km (500 mi) away.
It's about 0.000000000000000004 times as heavy as The Earth
In other words, 24,600,000 kilograms is 0.00000000000000000411810 times the weight of The Earth, and the weight of The Earth is 242,830,000,000,000,000.00000000000000000000000 times that amount.The mass of the planet Earth is 5,973,599,999,999,999,505,072,128.000000000000000000000000000000 kilograms. The element iron makes up about 32% of that mass, or 1,917,499,999,999,999,942,328,320.000000000000000000000000000000 kilograms.
It's about 0.00000000000000000000001 times as heavy as The Sun
In other words, 24,600,000 kilograms is 0.0000000000000000000000120 times the weight of The Sun, and the weight of The Sun is 83,000,000,000,000,002,097,152.0000000000000000000000000 times that amount.The sun has a mass of 2,000,000,000,000,000,179,380,838,125,797,376.000000000000000000000000000000000000 kilograms which represents 99.9% of the solar system's total mass. 98.7% of the sun's mass consists of hydrogen and helium — respectively the lightest and second-lightest elements in the universe.