21398296788

Names of 21398296788

• Cardinal: 21398296788 can be written as Twenty-one billion, three hundred ninety-eight million, two hundred ninety-six thousand, seven hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1398296788 × 10¹⁰

Factors of 21398296788

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 707

Divisors of 21398296788

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 9 11 12 18 22 33 36 44 66 67 99 121 132 134 157 198 201 242 268 314 363 396 402 467 471 484 603 628 726 737 804 934 942 1089 1206 1401 1413 1452 1474 1727 1868 1884 2178 2211 2412 2802 2826 2948 3454 4203 4356 4422 5137 5181 5604 5652 6633 6908 8107 8406 8844 10274 10362 10519 13266 15411 15543 16214 16812 18997 20548 20724 21038 24321 26532 30822 31086 31289 31557 32428 37994 42076 46233 48642 56507 56991 61644 62172 62578 63114 72963 73319 75988 92466 93867 94671 97284 113014 113982 115709 125156 126228 145926 146638 169521 170973 184932 187734 189342 219957 226028 227964 231418 281601 291852 293276 339042 341946 344179 347127 375468 378684 439914 462836 508563 563202 659871 678084 683892 688358 694254 806509 879828 1017126 1032537 1041381 1126404 1272799 1319742 1376716 1388508 1613018 2034252 2065074 2082762 2419527 2545598 2639484 3097611 3226036 3785969 3818397 4130148 4165524 4839054 4912373 5091196 6195222 7258581 7571938 7636794 8871599 9678108 9824746 11357907 11455191 12390444 14517162 14737119 15143876 15273588 17743198 19649492 22715814 22910382 26614797 29034324 29474238 34073721 35486396 44211357 45431628 45820764 53229594 54036103 58948476 68147442 79844391 88422714 106459188 108072206 136294884 159688782 162108309 176845428 216144412 319377564 324216618 486324927 594397133 648433236 972649854 1188794266 1783191399 1945299708 2377588532 3566382798 5349574197 7132765596 10699148394 21398296788
• Sum of all divisors σ(n): 60856207776
• Sum of proper divisors (its aliquot sum) s(n): 39457910988
• 21398296788 is an abundant number, because the sum of its proper divisors (39457910988) is greater than itself. Its abundance is 18059614200

Bases of 21398296788

• Binary: 10011111011011100000001100011010100₂
• Hexadecimal: 0x4FB7018D4
• Base-36: 9TVZRH0

Squares and roots of 21398296788

• 21398296788 squared (21398296788²) is 457887105427331116944
• 21398296788 cubed (21398296788³) is 9798004177332276807115247575872
• The square root of 21398296788 is 146281.5668086721
• The cube root of 21398296788 is 2776.2574411325

Scales and comparisons

• 21,398,296,788 seconds is equal to 680 years, 20 weeks, 5 days, 11 hours, 19 minutes, 48 seconds.
• To count from 1 to 21,398,296,788 would take you about one thousand, three hundred sixty 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 21398296788 cubic inches would be around 231.4 feet tall.

Recreational maths with 21398296788

• 21398296788 backwards is 88769289312
• The number of decimal digits it has is: 11
• The sum of 21398296788's digits is 63
• More coming soon!