20491921072

Names of 20491921072

• Cardinal: 20491921072 can be written as Twenty billion, four hundred ninety-one million, nine hundred twenty-one thousand and seventy-two.

Scientific notation

• Scientific notation: 2.0491921072 × 10¹⁰

Factors of 20491921072

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 4845

Divisors of 20491921072

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 7 8 14 16 28 29 31 43 56 58 62 86 112 116 124 172 203 217 232 248 301 344 406 434 464 496 602 688 812 868 899 1204 1247 1333 1624 1736 1798 2408 2494 2666 3248 3472 3596 4733 4816 4988 5332 6293 7192 8729 9331 9466 9976 10664 12586 14384 17458 18662 18932 19952 21328 25172 33131 34916 37324 37864 38657 50344 66262 69832 74648 75728 77314 100688 132524 137257 139664 146723 149296 154628 203519 265048 270599 274514 293446 309256 407038 530096 541198 549028 586892 618512 814076 960799 1027061 1082396 1098056 1173784 1424633 1628152 1921598 2054122 2164792 2196112 2347568 2849266 3256304 3843196 4108244 4254967 4329584 5698532 5902051 6309089 7686392 8216488 8509934 11397064 11804102 12618178 15372784 16432976 17019868 22794128 23608204 25236356 29784769 34039736 41314357 44163623 47216408 50472712 59569538 68079472 82628714 88327246 94432816 100945424 119139076 165257428 176654492 182963581 238278152 330514856 353308984 365927162 476556304 661029712 706617968 731854324 1280745067 1463708648 2561490134 2927417296 5122980268 10245960536 20491921072
• Sum of all divisors σ(n): 49591111680
• Sum of proper divisors (its aliquot sum) s(n): 29099190608
• 20491921072 is an abundant number, because the sum of its proper divisors (29099190608) is greater than itself. Its abundance is 8607269536

Bases of 20491921072

• Binary: 10011000101011010011110011010110000₂
• Hexadecimal: 0x4C569E6B0
• Base-36: 9EWCZHS

Squares and roots of 20491921072

• 20491921072 squared (20491921072²) is 419918829221077629184
• 20491921072 cubed (20491921072³) is 8604943505044970016023411765248
• The square root of 20491921072 is 143149.9950122249
• The cube root of 20491921072 is 2736.4922644861

Scales and comparisons

• 20,491,921,072 seconds is equal to 651 years, 30 weeks, 1 day, 17 minutes, 52 seconds.
• To count from 1 to 20,491,921,072 would take you about one thousand, three hundred three 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 20491921072 cubic inches would be around 228 feet tall.

Recreational maths with 20491921072

• 20491921072 backwards is 27012919402
• The number of decimal digits it has is: 11
• The sum of 20491921072's digits is 37
• More coming soon!