21532857840

Names of 21532857840

• Cardinal: 21532857840 can be written as Twenty-one billion, five hundred thirty-two million, eight hundred fifty-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.153285784 × 10¹⁰

Factors of 21532857840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 947

Divisors of 21532857840

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 36 39 40 45 48 52 60 65 72 78 80 90 104 117 120 130 144 156 169 180 195 208 234 240 260 271 312 338 360 390 468 507 520 542 585 624 653 676 720 780 813 845 936 1014 1040 1084 1170 1306 1352 1355 1521 1560 1626 1690 1872 1959 2028 2168 2340 2439 2535 2612 2704 2710 3042 3120 3252 3265 3380 3523 3918 4056 4065 4336 4680 4878 5070 5224 5420 5877 6084 6504 6530 6760 7046 7605 7836 8112 8130 8489 9360 9756 9795 10140 10448 10569 10840 11754 12168 12195 13008 13060 13520 14092 15210 15672 16260 16978 17615 19512 19590 20280 21138 21680 23508 24336 24390 25467 26120 28184 29385 30420 31344 31707 32520 33956 35230 39024 39180 40560 42276 42445 45799 47016 48780 50934 52240 52845 56368 58770 60840 63414 65040 67912 70460 76401 78360 84552 84890 91598 94032 97560 101868 105690 110357 117540 121680 126828 127335 135824 137397 140920 152802 156720 158535 169104 169780 176963 183196 195120 203736 211380 220714 228995 235080 253656 254670 274794 281840 305604 317070 331071 339560 353926 366392 382005 407472 412191 422760 441428 457990 470160 507312 509340 530889 549588 551785 611208 634140 662142 679120 686985 707852 732784 764010 824382 845520 882856 884815 915980 993213 1018680 1061778 1099176 1103570 1222416 1268280 1324284 1373970 1415704 1528020 1592667 1648764 1655355 1765712 1769630 1831960 1986426 2037360 2060955 2123556 2198352 2207140 2300519 2536560 2648568 2654445 2747940 2831408 3056040 3185334 3297528 3310710 3539260 3663920 3972852 4121910 4247112 4414280 4601038 4966065 5297136 5308890 5495880 6112080 6370668 6595056 6621420 6901557 7078520 7945704 7963335 8243820 8494224 8828560 9202076 9932130 10617780 10991760 11502595 12741336 13242840 13803114 14157040 15891408 15926670 16487640 18404152 19864260 20704671 21235560 23005190 25482672 26485680 27606228 29906747 31853340 32975280 34507785 36808304 39728520 41409342 42471120 46010380 55212456 59813494 63706680 69015570 79457040 82818684 89720241 92020760 103523355 110424912 119626988 127413360 138031140 149533735 165637368 179440482 184041520 207046710 239253976 269160723 276062280 299067470 331274736 358880964 414093420 448601205 478507952 538321446 552124560 598134940 717761928 828186840 897202410 1076642892 1196269880 1345803615 1435523856 1656373680 1794404820 2153285784 2392539760 2691607230 3588809640 4306571568 5383214460 7177619280 10766428920 21532857840
• Sum of all divisors σ(n): 78714372672
• Sum of proper divisors (its aliquot sum) s(n): 57181514832
• 21532857840 is an abundant number, because the sum of its proper divisors (57181514832) is greater than itself. Its abundance is 35648656992

Bases of 21532857840

• Binary: 10100000011011101010101010111110000₂
• Hexadecimal: 0x5037555F0
• Base-36: 9W43VG0

Squares and roots of 21532857840

• 21532857840 squared (21532857840²) is 463663966757649465600
• 21532857840 cubed (21532857840³) is 9984010281722951675316770304000
• The square root of 21532857840 is 146740.7845147353
• The cube root of 21532857840 is 2782.0646911909

Scales and comparisons

• 21,532,857,840 seconds is equal to 684 years, 35 weeks, 1 day, 21 hours, 24 minutes.
• To count from 1 to 21,532,857,840 would take you about one thousand, three hundred sixty-nine 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 21532857840 cubic inches would be around 231.8 feet tall.

Recreational maths with 21532857840

• 21532857840 backwards is 04875823512
• 21532857840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21532857840's digits is 45
• More coming soon!