21263421816

Names of 21263421816

• Cardinal: 21263421816 can be written as Twenty-one billion, two hundred sixty-three million, four hundred twenty-one thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 2.1263421816 × 10¹⁰

Factors of 21263421816

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1921

Divisors of 21263421816

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 18 19 21 24 26 28 36 38 39 42 49 52 56 57 63 72 76 78 84 91 98 104 114 117 126 133 147 152 156 168 169 171 182 196 228 234 247 252 266 273 294 312 338 342 364 392 399 441 456 468 494 504 507 532 546 588 637 676 684 728 741 798 819 882 931 936 988 1014 1064 1092 1176 1183 1197 1274 1352 1368 1482 1521 1596 1638 1729 1764 1862 1877 1911 1976 2028 2184 2223 2366 2394 2548 2793 2964 3042 3192 3211 3276 3458 3528 3549 3724 3754 3822 4056 4446 4732 4788 5096 5187 5586 5631 5733 5928 6084 6422 6552 6916 7098 7448 7508 7644 8281 8379 8892 9464 9576 9633 10374 10647 11172 11262 11466 12103 12168 12844 13139 13832 14196 15016 15288 15561 16562 16758 16893 17784 19266 20748 21294 22344 22477 22524 22932 24206 24401 24843 25688 26278 28392 28899 31122 33124 33516 33786 35663 36309 38532 39417 41496 42588 44954 45048 45864 48412 48802 49686 52556 57798 62244 66248 67032 67431 67572 71326 72618 73203 74529 77064 78834 85176 89908 91973 96824 97604 99372 105112 106989 108927 115596 118251 124488 134862 135144 142652 145236 146406 149058 157339 157668 170807 179816 183946 195208 198744 202293 213978 217854 219609 231192 236502 249641 269724 275919 285304 290472 292812 298116 314678 315336 317213 320967 341614 367892 404586 427956 435708 439218 463619 472017 473004 499282 512421 539448 551838 585624 596232 629356 634426 641934 683228 735784 748923 809172 827757 855912 871416 878436 927238 944034 946008 951639 998564 1024842 1103676 1195649 1258712 1268852 1283868 1366456 1390857 1416051 1497846 1537263 1618344 1655514 1747487 1756872 1854476 1888068 1903278 1997128 2049684 2207352 2220491 2246769 2391298 2537704 2567736 2781714 2832102 2854917 2995692 3074526 3245333 3311028 3494974 3586947 3708952 3776136 3806556 4099368 4172571 4440982 4493538 4782596 5242461 5563428 5664204 5709834 5991384 6027047 6149052 6490666 6622056 6661473 6989948 7173894 7613112 8345142 8881964 8987076 9565192 9735999 10484922 10760841 11126856 11328408 11419668 12054094 12298104 12981332 13322946 13979896 14347788 15543437 15727383 16690284 17763928 17974152 18081141 19471998 19984419 20969844 21521682 22717331 22839336 24108188 25962664 26645892 28695576 29207997 31086874 31454766 33380568 36162282 38943996 39968838 41939688 42189329 43043364 45434662 46630311 48216376 53291784 54243423 58415994 62173748 62909532 68151993 72324564 77887992 79937676 84378658 86086728 90869324 93260622 108486846 116831988 124347496 125819064 126567987 136303986 139890933 144649128 159875352 168757316 181738648 186521244 204455979 216973692 233663976 253135974 272607972 279781866 295325303 337514632 373042488 379703961 408911958 433947384 506271948 545215944 559563732 590650606 759407922 817823916 885975909 1012543896 1119127464 1181301212 1518815844 1635647832 1771951818 2362602424 2657927727 3037631688 3543903636 5315855454 7087807272 10631710908 21263421816
• Sum of all divisors σ(n): 76398730200
• Sum of proper divisors (its aliquot sum) s(n): 55135308384
• 21263421816 is an abundant number, because the sum of its proper divisors (55135308384) is greater than itself. Its abundance is 33871886568

Bases of 21263421816

• Binary: 10011110011011001100001000101111000₂
• Hexadecimal: 0x4F3661178
• Base-36: 9RNOXA0

Squares and roots of 21263421816

• 21263421816 squared (21263421816²) is 452133107325144737856
• 21263421816 cubed (21263421816³) is 9613896978033352024284871466496
• The square root of 21263421816 is 145819.8265531817
• The cube root of 21263421816 is 2770.4121607327

Scales and comparisons

• 21,263,421,816 seconds is equal to 676 years, 5 weeks, 5 days, 10 hours, 3 minutes, 36 seconds.
• To count from 1 to 21,263,421,816 would take you about one thousand, three hundred fifty-two 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 21263421816 cubic inches would be around 230.9 feet tall.

Recreational maths with 21263421816

• 21263421816 backwards is 61812436212
• 21263421816 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21263421816's digits is 36
• More coming soon!