21368726808

Names of 21368726808

• Cardinal: 21368726808 can be written as Twenty-one billion, three hundred sixty-eight million, seven hundred twenty-six thousand, eight hundred eight.

Scientific notation

• Scientific notation: 2.1368726808 × 10¹⁰

Factors of 21368726808

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 79

Divisors of 21368726808

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 11 12 13 19 22 24 26 31 33 38 39 44 52 57 62 66 76 78 88 93 104 114 121 124 132 143 152 156 186 209 228 242 247 248 264 286 312 341 363 372 403 418 429 456 484 494 572 589 627 682 726 741 744 806 836 858 961 968 988 1023 1144 1178 1209 1254 1364 1452 1482 1573 1612 1672 1716 1767 1922 1976 2046 2299 2356 2418 2508 2717 2728 2883 2904 2964 3146 3224 3432 3534 3751 3844 4092 4433 4598 4712 4719 4836 5016 5434 5766 5928 6292 6479 6897 7068 7502 7657 7688 8151 8184 8866 9196 9438 9672 10571 10868 11253 11532 12493 12584 12958 13299 13794 14136 15004 15314 16302 17732 18259 18392 18876 19437 21142 21736 22506 22971 23064 24986 25916 26598 27588 29791 29887 30008 30628 31713 32604 35464 36518 37479 37752 38874 42284 45012 45942 48763 49972 51832 53196 54777 55176 59582 59774 61256 63426 65208 71269 73036 74958 77748 84227 84568 89373 89661 90024 91884 97526 99944 106392 109554 116281 119164 119548 126852 137423 142538 146072 146289 149916 155496 168454 178746 179322 183768 195052 200849 213807 219108 232562 237367 238328 239096 252681 253704 274846 285076 292578 299832 327701 336908 348843 357492 358644 387283 390104 401698 412269 427614 438216 465124 474734 505362 549692 566029 570152 585156 602547 655402 673816 697686 712101 714984 717288 774566 803396 824538 855228 926497 930248 949468 983103 1010724 1099384 1132058 1161849 1170312 1205094 1310804 1395372 1424202 1511653 1549132 1606792 1649076 1698087 1710456 1852994 1898936 1966206 2021448 2209339 2264116 2323698 2410188 2611037 2621608 2779491 2790744 2848404 3023306 3098264 3298152 3396174 3604711 3705988 3932412 4260113 4418678 4528232 4534959 4647396 4820376 5222074 5558982 5696808 6046612 6226319 6628017 6792348 7209422 7358377 7411976 7833111 7864824 8520226 8837356 9069918 9294792 10444148 10814133 11117964 12093224 12452638 12780339 13256034 13584696 14418844 14716754 15666222 17040452 17674712 18139836 18678957 20888296 21628266 22075131 22235928 24905276 25560678 26512068 28721407 28837688 29433508 31332444 34080904 36279672 37357914 43256532 44150262 46861243 49810552 51121356 53024136 57442814 58867016 62664888 68489509 74715828 80942147 86164221 86513064 88300524 93722486 102242712 114885628 136979018 140583729 149431656 161884294 172328442 176601048 187444972 205468527 229771256 242826441 273958036 281167458 323768588 344656884 374889944 410937054 485652882 547916072 562334916 647537176 689313768 821874108 890363617 971305764 1124669832 1643748216 1780727234 1942611528 2671090851 3561454468 5342181702 7122908936 10684363404 21368726808
• Sum of all divisors σ(n): 68783769600
• Sum of proper divisors (its aliquot sum) s(n): 47415042792
• 21368726808 is an abundant number, because the sum of its proper divisors (47415042792) is greater than itself. Its abundance is 26046315984

Bases of 21368726808

• Binary: 10011111001101011001110010100011000₂
• Hexadecimal: 0x4F9ACE518
• Base-36: 9TEDZ4O

Squares and roots of 21368726808

• 21368726808 squared (21368726808²) is 456622485394937868864
• 21368726808 cubed (21368726808³) is 9757441144794397305888545306112
• The square root of 21368726808 is 146180.4597338509
• The cube root of 21368726808 is 2774.9780290119

Scales and comparisons

• 21,368,726,808 seconds is equal to 679 years, 23 weeks, 6 days, 5 hours, 26 minutes, 48 seconds.
• To count from 1 to 21,368,726,808 would take you about one thousand, three hundred fifty-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 21368726808 cubic inches would be around 231.2 feet tall.

Recreational maths with 21368726808

• 21368726808 backwards is 80862786312
• The number of decimal digits it has is: 11
• The sum of 21368726808's digits is 51
• More coming soon!