21591137920

Names of 21591137920

• Cardinal: 21591137920 can be written as Twenty-one billion, five hundred ninety-one million, one hundred thirty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.159113792 × 10¹⁰

Factors of 21591137920

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 236

Divisors of 21591137920

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 4 5 8 10 11 16 19 20 22 31 32 38 40 41 44 55 62 64 76 80 82 88 95 110 124 127 128 152 155 160 164 176 190 205 209 220 248 254 304 310 320 328 341 352 380 410 418 440 451 496 508 589 608 620 635 640 656 682 704 760 779 820 836 880 902 992 1016 1045 1178 1216 1240 1270 1271 1312 1364 1397 1408 1520 1558 1640 1672 1705 1760 1804 1984 2032 2090 2255 2356 2413 2432 2480 2540 2542 2624 2728 2794 2945 3040 3116 3280 3344 3410 3520 3608 3895 3937 3968 4064 4180 4510 4712 4826 4960 5080 5084 5207 5248 5456 5588 5890 6080 6232 6355 6479 6560 6688 6820 6985 7040 7216 7790 7874 8128 8360 8569 9020 9424 9652 9920 10160 10168 10414 10912 11176 11780 12065 12160 12464 12710 12958 13120 13376 13640 13970 13981 14432 15580 15748 16256 16720 17138 18040 18848 19304 19685 19840 20320 20336 20828 21824 22352 23560 24130 24149 24928 25420 25916 26035 26240 26543 26752 27280 27940 27962 28864 31160 31496 32395 33440 34276 36080 37696 38608 39370 40640 40672 41656 42845 43307 43648 44704 47120 48260 48298 49856 50840 51832 52070 53086 54560 55880 55924 57277 57728 62320 62992 64790 66880 68552 69905 72160 74803 75392 77216 78740 81280 81344 83312 85690 86614 89408 94240 96520 96596 98933 99712 101680 103664 104140 106172 109120 111760 111848 114554 120745 124640 125984 129580 132715 133760 137104 139810 144320 149606 154432 157480 161417 162688 166624 171380 173228 178816 188480 193040 193192 197866 203360 207328 208280 212344 216535 218240 223520 223696 229108 241490 249280 251968 259160 265430 265639 274208 279620 286385 288640 299212 308864 314960 322834 333248 342760 346456 374015 376960 386080 386384 395732 406720 414656 416560 424688 433070 447040 447392 458216 482980 494665 498560 503936 518320 530860 531278 548416 559240 572770 598424 629920 645668 666496 685520 692912 748030 772160 772768 791464 807085 813440 822833 829312 833120 849376 866140 894080 894784 916432 965960 989330 1036640 1061720 1062556 1088263 1096832 1118480 1145540 1196848 1259840 1291336 1328195 1371040 1385824 1496060 1544320 1545536 1582928 1614170 1645666 1666240 1698752 1732280 1775587 1789568 1832864 1931920 1978660 2073280 2123440 2125112 2176526 2236960 2291080 2393696 2519680 2582672 2656390 2742080 2771648 2992120 3066923 3091072 3165856 3228340 3291332 3332480 3397504 3464560 3551174 3665728 3863840 3957320 4114165 4146560 4246880 4250224 4353052 4473920 4582160 4787392 5165344 5312780 5441315 5484160 5543296 5984240 6133846 6331712 6456680 6582664 6929120 7102348 7331456 7727680 7914640 8228330 8493760 8500448 8706104 8877935 8947840 9164320 9574784 10330688 10625560 10882630 11968480 12267692 12663424 12913360 13165328 13858240 14204696 15334615 15455360 15829280 16456660 16987520 17000896 17412208 17755870 18328640 20661376 21251120 21765260 23936960 24535384 25826720 26330656 27716480 28409392 30669230 31658560 32913320 33736153 34001792 34824416 35511740 36657280 42502240 43530520 47873920 49070768 51653440 52661312 56818784 61338460 63317120 65826640 67472306 69648832 71023480 85004480 87061040 98141536 103306880 105322624 113637568 122676920 131653280 134944612 139297664 142046960 168680765 170008960 174122080 196283072 227275136 245353840 263306560 269889224 284093920 337361530 348244160 392566144 490707680 526613120 539778448 568187840 674723060 696488320 981415360 1079556896 1136375680 1349446120 1962830720 2159113792 2698892240 4318227584 5397784480 10795568960 21591137920
• Sum of all divisors σ(n): 63170150400
• Sum of proper divisors (its aliquot sum) s(n): 41579012480
• 21591137920 is an abundant number, because the sum of its proper divisors (41579012480) is greater than itself. Its abundance is 19987874560

Bases of 21591137920

• Binary: 10100000110111011101001111010000000₂
• Hexadecimal: 0x506EE9E80
• Base-36: 9X2T0N4

Squares and roots of 21591137920

• 21591137920 squared (21591137920²) is 466177236680461926400
• 21591137920 cubed (21591137920³) is 10065297012332336422211289088000
• The square root of 21591137920 is 146939.2320655039
• The cube root of 21591137920 is 2784.5723764789

Scales and comparisons

• 21,591,137,920 seconds is equal to 686 years, 27 weeks, 4 days, 10 hours, 18 minutes, 40 seconds.
• To count from 1 to 21,591,137,920 would take you about one thousand, three hundred seventy-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 21591137920 cubic inches would be around 232 feet tall.

Recreational maths with 21591137920

• 21591137920 backwards is 02973119512
• 21591137920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21591137920's digits is 40
• More coming soon!