21018045594

Names of 21018045594

• Cardinal: 21018045594 can be written as Twenty-one billion, eighteen million, forty-five thousand, five hundred ninety-four.

Scientific notation

• Scientific notation: 2.1018045594 × 10¹⁰

Factors of 21018045594

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 267

Divisors of 21018045594

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 6 7 13 14 19 21 26 38 39 42 43 49 53 57 78 86 91 98 106 114 127 129 133 147 159 182 247 254 258 266 273 294 301 318 371 381 399 494 546 559 602 637 689 741 742 762 798 817 889 903 931 1007 1113 1118 1274 1378 1482 1634 1651 1677 1729 1778 1806 1862 1911 2014 2067 2107 2226 2279 2413 2451 2597 2667 2793 3021 3302 3354 3458 3822 3913 4134 4214 4558 4823 4826 4902 4953 5187 5194 5334 5461 5586 5719 6042 6223 6321 6731 6837 7049 7239 7791 7826 9646 9906 10374 10621 10922 11438 11557 11739 12103 12446 12642 13091 13462 13674 14098 14469 14478 15582 15953 16383 16891 17157 18669 20193 21147 21242 23114 23478 24206 26182 27391 28938 29627 31369 31863 31906 32766 33761 33782 34314 34671 36309 37338 38227 39273 40033 40386 42294 43301 47117 47859 49343 50673 54782 59254 62738 63726 67522 69342 70993 72618 74347 76454 78546 80066 80899 82173 86602 87503 88881 91637 94107 94234 95718 98686 101283 101346 103759 111671 114681 118237 120099 127889 129903 141351 141986 148029 148694 161798 164346 175006 177762 183274 188214 202566 207389 207518 212979 219583 223041 223342 229362 236474 240198 242697 255778 259806 262509 267589 274911 282702 289433 296058 303107 311277 329819 335013 354711 383667 414778 425958 439166 446082 485394 496951 520429 525018 535178 549822 562913 578866 606214 612521 622167 622554 641459 658749 659638 670026 709422 726313 767334 802767 868299 895223 909321 989457 993902 1040858 1125826 1225042 1244334 1282918 1317498 1348867 1451723 1452626 1490853 1537081 1561287 1605534 1662557 1688739 1736598 1790446 1818642 1837563 1924377 1978914 2026031 2121749 2178939 2685669 2697734 2903446 2981706 3074162 3122574 3325114 3377478 3478657 3675126 3762629 3848754 3940391 4046601 4052062 4243498 4287647 4355169 4357878 4611243 4987671 5084191 5371338 5499227 6078093 6266561 6365247 6957314 7525258 7880782 8093202 8575294 8710338 9222486 9442069 9975342 10168382 10435971 10998454 11287887 11637899 11821173 12156186 12533122 12730494 12862941 14182217 15252573 16497681 18799683 18884138 20871942 22575774 23275798 23642346 25725882 26338403 27582737 28326207 28364434 30505146 32995362 34913697 37599366 38494589 42546651 52676806 55165474 56652414 66094483 69827394 71489951 76989178 79015209 81465293 82748211 85093302 115483767 132188966 142979902 158030418 162930586 165496422 184368821 198283449 214469853 230967534 244395879 269462123 368737642 396566898 428939706 488791758 500429657 538924246 553106463 808386369 1000859314 1106212926 1501288971 1616772738 3002577942 3503007599 7006015198 10509022797 21018045594
• Sum of all divisors σ(n): 58246594560
• Sum of proper divisors (its aliquot sum) s(n): 37228548966
• 21018045594 is an abundant number, because the sum of its proper divisors (37228548966) is greater than itself. Its abundance is 16210503372

Bases of 21018045594

• Binary: 10011100100110001011110110010011010₂
• Hexadecimal: 0x4E4C5EC9A
• Base-36: 9NLLNRU

Squares and roots of 21018045594

• 21018045594 squared (21018045594²) is 441758240591462812836
• 21018045594 cubed (21018045594³) is 9284894842276586927342536444584
• The square root of 21018045594 is 144976.0173063117
• The cube root of 21018045594 is 2759.7142108517

Scales and comparisons

• 21,018,045,594 seconds is equal to 668 years, 16 weeks, 9 hours, 59 minutes, 54 seconds.
• To count from 1 to 21,018,045,594 would take you about one thousand, three hundred thirty-six 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 21018045594 cubic inches would be around 230 feet tall.

Recreational maths with 21018045594

• 21018045594 backwards is 49554081012
• 21018045594 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21018045594's digits is 39
• More coming soon!