21002005992

Names of 21002005992

• Cardinal: 21002005992 can be written as Twenty-one billion, two million, five thousand, nine hundred ninety-two.

Scientific notation

• Scientific notation: 2.1002005992 × 10¹⁰

Factors of 21002005992

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 700

Divisors of 21002005992

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 8 11 12 22 24 33 43 44 53 66 67 86 88 106 129 132 134 159 172 201 212 258 264 268 318 344 402 424 473 516 521 536 583 636 737 804 946 1032 1042 1166 1272 1419 1474 1563 1608 1749 1892 2084 2211 2279 2332 2838 2881 2948 3126 3498 3551 3784 4168 4422 4558 4664 5676 5731 5762 5896 6252 6837 6996 7102 8643 8844 9116 10653 11352 11462 11524 12504 13674 13992 14204 17193 17286 17688 18232 21306 22403 22924 23048 25069 27348 27613 28408 31691 34386 34572 34907 39061 42612 44806 45848 50138 54696 55226 63382 67209 68772 69144 69814 75207 78122 82839 85224 89612 95073 100276 104721 110452 117183 126764 134418 137544 139628 150414 152693 156244 165678 179224 190146 200552 209442 220904 234366 246433 253528 268836 279256 300828 303743 305386 312488 331356 380292 383977 418884 458079 468732 492866 537672 601656 607486 610772 662712 739299 760584 767954 837768 911229 916158 937464 985732 1151931 1187359 1214972 1221544 1478598 1501001 1535908 1679623 1822458 1832316 1850071 1971464 2303862 2374718 2429944 2957196 3002002 3071816 3359246 3562077 3644916 3664632 3700142 4503003 4607724 4749436 5038869 5550213 5914392 6004004 6718492 7124154 7289832 7400284 9006006 9215448 9498872 10077738 11100426 12008008 13060949 13436984 14248308 14800568 16511011 18012012 20155476 20350781 22200852 26121898 28496616 33022022 36024024 39182847 40310952 40701562 44401704 49533033 52243796 61052343 66044044 78365694 79553053 81403124 99066066 104487592 122104686 132088088 156731388 159106106 162806248 198132132 238659159 244209372 313462776 318212212 396264264 477318318 488418744 636424424 875083583 954636636 1750167166 1909273272 2625250749 3500334332 5250501498 7000668664 10501002996 21002005992
• Sum of all divisors σ(n): 60723717120
• Sum of proper divisors (its aliquot sum) s(n): 39721711128
• 21002005992 is an abundant number, because the sum of its proper divisors (39721711128) is greater than itself. Its abundance is 18719705136

Bases of 21002005992

• Binary: 10011100011110100010010110111101000₂
• Hexadecimal: 0x4E3D12DE8
• Base-36: 9NC1VJC

Squares and roots of 21002005992

• 21002005992 squared (21002005992²) is 441084255688003904064
• 21002005992 cubed (21002005992³) is 9263654180936318075671521151488
• The square root of 21002005992 is 144920.6886265727
• The cube root of 21002005992 is 2759.0120208829

Scales and comparisons

• 21,002,005,992 seconds is equal to 667 years, 41 weeks, 3 days, 18 hours, 33 minutes, 12 seconds.
• To count from 1 to 21,002,005,992 would take you about one thousand, three hundred thirty-five years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21002005992 cubic inches would be around 229.9 feet tall.

Recreational maths with 21002005992

• 21002005992 backwards is 29950020012
• The number of decimal digits it has is: 11
• The sum of 21002005992's digits is 30
• More coming soon!