21504311568

Names of 21504311568

• Cardinal: 21504311568 can be written as Twenty-one billion, five hundred four million, three hundred eleven thousand, five hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1504311568 × 10¹⁰

Factors of 21504311568

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1181

Divisors of 21504311568

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 17 18 19 24 27 34 36 38 47 48 51 54 57 68 72 76 81 94 102 108 114 136 141 144 152 153 162 171 188 204 216 228 272 282 304 306 323 324 342 376 408 423 432 456 459 513 564 612 646 648 684 752 799 816 846 893 912 918 969 1026 1093 1128 1224 1269 1292 1296 1368 1377 1539 1598 1692 1786 1836 1938 2052 2186 2256 2397 2448 2538 2584 2679 2736 2754 2907 3078 3196 3279 3384 3572 3672 3807 3876 4104 4372 4794 5076 5168 5358 5508 5814 6156 6392 6558 6768 7144 7191 7344 7614 7752 8037 8208 8721 8744 9588 9837 10152 10716 11016 11628 12312 12784 13116 14288 14382 15181 15228 15504 16074 17442 17488 18581 19176 19674 20304 20767 21432 21573 22032 23256 24111 24624 26163 26232 28764 29511 30362 30456 32148 34884 37162 38352 39348 41534 42864 43146 45543 46512 48222 51371 52326 52464 55743 57528 59022 60724 60912 62301 64296 64719 69768 72333 74324 78696 83068 86292 88533 91086 96444 102742 104652 111486 115056 118044 121448 124602 128592 129438 136629 139536 144666 148648 154113 157392 166136 167229 172584 177066 182172 186903 192888 205484 209304 222972 236088 242896 249204 258876 273258 289332 297296 308226 332272 334458 345168 353039 354132 364344 373806 385776 409887 410968 418608 445944 462339 472176 498408 501687 517752 546516 560709 578664 616452 668916 706078 708264 728688 747612 819774 821936 873307 891888 924678 976049 996816 1003374 1035504 1059117 1093032 1121418 1157328 1229661 1232904 1337832 1387017 1412156 1416528 1495224 1505061 1639548 1682127 1746614 1849356 1952098 2006748 2118234 2186064 2242836 2459322 2465808 2619921 2675664 2774034 2824312 2928147 2990448 3010122 3177351 3279096 3364254 3493228 3698712 3904196 4013496 4161051 4236468 4485672 4918644 5239842 5548068 5648624 5856294 6020244 6354702 6558192 6728508 6986456 7397424 7808392 7859763 8026992 8322102 8472936 8784441 8971344 9532053 9837288 10479684 11096136 11712588 12040488 12709404 13457016 13972912 15616784 15719526 16592833 16644204 16945872 17568882 19064106 19674576 20959368 22192272 23425176 23579289 24080976 25418808 26353323 26914032 28596159 31439052 33185666 33288408 35137764 38128212 41918736 46850352 47158578 49778499 50837616 52706646 57192318 62878104 66371332 66576816 70275528 70737867 76256424 79059969 94317156 99556998 105413292 114384636 125756208 132742664 140551056 141475734 149335497 152512848 158119938 188634312 199113996 210826584 228769272 265485328 282951468 298670994 316239876 377268624 398227992 421653168 448006491 457538544 565902936 597341988 632479752 796455984 896012982 1131805872 1194683976 1264959504 1344019473 1792025964 2389367952 2688038946 3584051928 5376077892 7168103856 10752155784 21504311568
• Sum of all divisors σ(n): 70910104320
• Sum of proper divisors (its aliquot sum) s(n): 49405792752
• 21504311568 is an abundant number, because the sum of its proper divisors (49405792752) is greater than itself. Its abundance is 27901481184

Bases of 21504311568

• Binary: 10100000001110000011100000100010000₂
• Hexadecimal: 0x501C1C110
• Base-36: 9VN4100

Squares and roots of 21504311568

• 21504311568 squared (21504311568²) is 462435416013618618624
• 21504311568 cubed (21504311568³) is 9944355266034551306016263442432
• The square root of 21504311568 is 146643.4845739831
• The cube root of 21504311568 is 2780.8347461355

Scales and comparisons

• 21,504,311,568 seconds is equal to 683 years, 40 weeks, 11 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,504,311,568 would take you about one thousand, three hundred sixty-seven 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 21504311568 cubic inches would be around 231.7 feet tall.

Recreational maths with 21504311568

• 21504311568 backwards is 86511340512
• 21504311568 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21504311568's digits is 36
• More coming soon!