19985539840

Names of 19985539840

• Cardinal: 19985539840 can be written as Nineteen billion, nine hundred eighty-five million, five hundred thirty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.998553984 × 10¹⁰

Factors of 19985539840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 943

Divisors of 19985539840

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 64 70 80 98 112 128 140 160 196 224 245 256 280 320 343 392 448 490 560 640 686 784 896 929 980 1120 1280 1372 1568 1715 1792 1858 1960 2240 2401 2744 3136 3430 3716 3920 4480 4645 4802 5488 6272 6503 6860 7432 7840 8960 9290 9604 10976 12005 12544 13006 13720 14864 15680 16807 18580 19208 21952 24010 26012 27440 29728 31360 32515 33614 37160 38416 43904 45521 48020 52024 54880 59456 62720 65030 67228 74320 76832 84035 87808 91042 96040 104048 109760 118912 130060 134456 148640 153664 168070 182084 192080 208096 219520 227605 237824 260120 268912 297280 307328 318647 336140 364168 384160 416192 439040 455210 520240 537824 594560 614656 637294 672280 728336 768320 832384 910420 1040480 1075648 1189120 1274588 1344560 1456672 1536640 1593235 1664768 1820840 2080960 2151296 2230529 2549176 2689120 2913344 3073280 3186470 3641680 4161920 4302592 4461058 5098352 5378240 5826688 6372940 7283360 8323840 8922116 10196704 10756480 11152645 11653376 12745880 14566720 15613703 17844232 20393408 21512960 22305290 25491760 29133440 31227406 35688464 40786816 44610580 50983520 58266880 62454812 71376928 78068515 81573632 89221160 101967040 124909624 142753856 156137030 178442320 203934080 249819248 285507712 312274060 356884640 407868160 499638496 571015424 624548120 713769280 999276992 1249096240 1427538560 1998553984 2498192480 2855077120 3997107968 4996384960 9992769920 19985539840
• Sum of all divisors σ(n): 55909859040
• Sum of proper divisors (its aliquot sum) s(n): 35924319200
• 19985539840 is an abundant number, because the sum of its proper divisors (35924319200) is greater than itself. Its abundance is 15938779360

Bases of 19985539840

• Binary: 10010100111001110110010001100000000₂
• Hexadecimal: 0x4A73B2300
• Base-36: 96IVH8G

Squares and roots of 19985539840

• 19985539840 squared (19985539840²) is 399421802696227225600
• 19985539840 cubed (19985539840³) is 7982660350750068634921467904000
• The square root of 19985539840 is 141370.2226071671
• The cube root of 19985539840 is 2713.7632769879

Scales and comparisons

• 19,985,539,840 seconds is equal to 635 years, 24 weeks, 6 days, 2 hours, 50 minutes, 40 seconds.
• To count from 1 to 19,985,539,840 would take you about one thousand, two hundred seventy 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 19985539840 cubic inches would be around 226.1 feet tall.

Recreational maths with 19985539840

• 19985539840 backwards is 04893558991
• The number of decimal digits it has is: 11
• The sum of 19985539840's digits is 61
• More coming soon!