21129295880

Names of 21129295880

• Cardinal: 21129295880 can be written as Twenty-one billion, one hundred twenty-nine million, two hundred ninety-five thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 2.112929588 × 10¹⁰

Factors of 21129295880

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 119

Divisors of 21129295880

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 20 22 28 35 40 41 44 49 53 55 56 70 77 82 88 98 106 110 121 140 154 164 196 205 212 220 242 245 265 280 287 308 328 371 385 392 410 424 440 451 484 490 530 539 574 583 605 616 742 770 820 847 902 968 980 1060 1078 1148 1166 1210 1435 1484 1540 1640 1681 1694 1804 1855 1960 2009 2120 2156 2173 2255 2296 2332 2420 2597 2695 2870 2915 2968 3080 3157 3362 3388 3608 3710 4018 4081 4235 4312 4346 4510 4664 4840 4961 5194 5390 5740 5830 5929 6314 6413 6724 6776 7420 8036 8162 8405 8470 8692 9020 9922 10045 10388 10780 10865 11480 11660 11767 11858 12628 12826 12985 13448 14840 15211 15785 16072 16324 16810 16940 17384 18040 18491 19844 20090 20405 20776 21560 21730 22099 23320 23534 23716 23903 24805 25256 25652 25970 28567 29645 30422 31570 32065 32648 33620 33880 34727 36982 39688 40180 40810 43460 44198 44891 47068 47432 47806 49610 51304 51940 57134 58835 59290 60844 63140 64130 67240 69454 73964 76055 80360 81620 82369 86920 88396 89093 89782 92455 94136 95612 99220 103880 106477 110495 114268 117670 118580 119515 121688 126280 128260 129437 138908 142835 147928 152110 163240 164738 167321 173635 176792 178186 179564 184910 191224 198440 203401 212954 220990 224455 228536 235340 237160 239030 243089 256520 258874 262933 277816 285670 304220 314237 329476 334642 347270 356372 359128 369820 406802 411845 425908 441980 445465 448910 470680 478060 486178 517748 525866 532385 571340 608440 623651 628474 647185 658952 669284 694540 712744 739640 813604 823690 836605 851816 883960 890930 897820 906059 956120 972356 980023 1017005 1035496 1051732 1064770 1142680 1171247 1215445 1247302 1256948 1294370 1314665 1338568 1389080 1423807 1571185 1627208 1647380 1673210 1781860 1795640 1812118 1840531 1944712 1960046 2034010 2103464 2129540 2342494 2430890 2494604 2513896 2588740 2629330 2847614 3118255 3142370 3294760 3346420 3563720 3624236 3681062 3920092 4068020 4259080 4365557 4530295 4684988 4861780 4900115 4989208 5177480 5258660 5695228 5856235 6236510 6284740 6692840 6860161 7119035 7248472 7362124 7840184 8136040 8731114 9060590 9202655 9369976 9723560 9800230 9966649 10517320 10780253 11390456 11712470 12473020 12569480 12883717 13720322 14238070 14724248 17462228 18121180 18405310 19600460 19933298 21560506 21827785 23424940 24946040 25767434 27440644 28476140 34300805 34924456 36242360 36810620 39200920 39866596 43121012 43655570 46849880 48021127 49833245 51534868 53901265 54881288 56952280 64418585 68601610 73621240 75461771 79733192 86242024 87311140 96042254 99666490 103069736 107802530 128837170 137203220 150923542 174622280 192084508 199332980 215605060 240105635 257674340 274406440 301847084 377308855 384169016 398665960 431210120 480211270 515348680 528232397 603694168 754617710 960422540 1056464794 1509235420 1920845080 2112929588 2641161985 3018470840 4225859176 5282323970 10564647940 21129295880
• Sum of all divisors σ(n): 63481626180
• Sum of proper divisors (its aliquot sum) s(n): 42352330300
• 21129295880 is an abundant number, because the sum of its proper divisors (42352330300) is greater than itself. Its abundance is 21223034420

Bases of 21129295880

• Binary: 10011101011011001110111100000001000₂
• Hexadecimal: 0x4EB677808
• Base-36: 9PFU51K

Squares and roots of 21129295880

• 21129295880 squared (21129295880²) is 446447144384584974400
• 21129295880 cubed (21129295880³) is 9433113808482976435099825472000
• The square root of 21129295880 is 145359.1960627191
• The cube root of 21129295880 is 2764.5747783847

Scales and comparisons

• 21,129,295,880 seconds is equal to 671 years, 44 weeks, 51 minutes, 20 seconds.
• To count from 1 to 21,129,295,880 would take you about one thousand, three hundred forty-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 21129295880 cubic inches would be around 230.4 feet tall.

Recreational maths with 21129295880

• 21129295880 backwards is 08859292112
• The number of decimal digits it has is: 11
• The sum of 21129295880's digits is 47
• More coming soon!