21211661328

Names of 21211661328

• Cardinal: 21211661328 can be written as Twenty-one billion, two hundred eleven million, six hundred sixty-one thousand, three hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1211661328 × 10¹⁰

Factors of 21211661328

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 83

Divisors of 21211661328

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 6 8 11 12 13 16 17 22 24 26 33 34 37 39 44 48 51 52 66 68 74 78 88 102 104 111 132 136 143 148 156 176 187 204 208 221 222 264 272 286 289 296 312 374 407 408 429 442 444 481 528 561 572 578 592 624 629 663 748 814 816 858 867 884 888 962 1122 1144 1156 1221 1258 1326 1443 1496 1628 1716 1734 1768 1776 1887 1924 2244 2288 2312 2431 2442 2516 2652 2886 2992 3179 3256 3432 3468 3536 3757 3774 3848 4488 4624 4862 4884 4913 5032 5291 5304 5772 6358 6512 6864 6919 6936 7293 7514 7548 7696 8177 8976 9537 9724 9768 9826 10064 10582 10608 10693 11271 11544 12716 13838 13872 14586 14739 15028 15096 15873 16354 19074 19448 19536 19652 20757 21164 21386 22542 23088 24531 25432 27676 29172 29478 30056 30192 31746 32079 32708 38148 38896 39304 41327 41514 42328 42772 45084 49062 50864 54043 55352 58344 58956 60112 63492 63869 64158 65416 76296 78608 82654 83028 83521 84656 85544 89947 90168 98124 108086 110704 116688 117623 117912 123981 126984 127738 128316 130832 139009 152592 162129 165308 166056 167042 171088 179894 180336 181781 191607 196248 216172 235246 235824 247962 250563 253968 255476 256632 269841 278018 324258 330616 332112 334084 352869 359788 363562 383214 392496 417027 432344 470492 495924 501126 510952 513264 539682 545343 556036 648516 661232 668168 702559 705738 719576 727124 766428 834054 864688 918731 940984 991848 1002252 1021904 1079364 1085773 1090686 1112072 1297032 1336336 1405118 1411476 1439152 1454248 1529099 1532856 1668108 1837462 1881968 1983696 1999591 2004504 2107677 2158728 2171546 2181372 2224144 2363153 2594064 2756193 2810236 2822952 2908496 3058198 3065712 3090277 3257319 3336216 3674924 3999182 4009008 4215354 4317456 4343092 4362744 4587297 4726306 5512386 5620472 5645904 5998773 6116396 6180554 6514638 6672432 7089459 7349848 7998364 8430708 8686184 8725488 9174594 9270831 9452612 11024772 11240944 11943503 11997546 12232792 12361108 13029276 14178918 14699696 15996728 16861416 17372368 18349188 18541662 18905224 22049544 23887006 23995092 24465584 24722216 25994683 26058552 28357836 31993456 33722832 33993047 35830509 36698376 37083324 37810448 40173601 44099088 47774012 47990184 49444432 51989366 52117104 56715672 67986094 71661018 73396752 74166648 77984049 80347202 95548024 95980368 101979141 103978732 113431344 120520803 135972188 143322036 148333296 155968098 160694404 191096048 203958282 207957464 241041606 271944376 286644072 311936196 321388808 407916564 415914928 441909611 482083212 543888752 573288144 623872392 642777616 815833128 883819222 964166424 1247744784 1325728833 1631666256 1767638444 1928332848 2651457666 3535276888 5302915332 7070553776 10605830664 21211661328
• Sum of all divisors σ(n): 70248795456
• Sum of proper divisors (its aliquot sum) s(n): 49037134128
• 21211661328 is an abundant number, because the sum of its proper divisors (49037134128) is greater than itself. Its abundance is 27825472800

Bases of 21211661328

• Binary: 10011110000010100000100010000010000₂
• Hexadecimal: 0x4F0504410
• Base-36: 9QSVIMO

Squares and roots of 21211661328

• 21211661328 squared (21211661328²) is 449934576293770723584
• 21211661328 cubed (21211661328³) is 9543859852100642024745310359552
• The square root of 21211661328 is 145642.2374450487
• The cube root of 21211661328 is 2768.1623754805

Scales and comparisons

• 21,211,661,328 seconds is equal to 674 years, 24 weeks, 1 day, 8 hours, 8 minutes, 48 seconds.
• To count from 1 to 21,211,661,328 would take you about one thousand, three hundred forty-eight 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 21211661328 cubic inches would be around 230.7 feet tall.

Recreational maths with 21211661328

• 21211661328 backwards is 82316611212
• 21211661328 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21211661328's digits is 33
• More coming soon!