21345988752

Names of 21345988752

• Cardinal: 21345988752 can be written as Twenty-one billion, three hundred forty-five million, nine hundred eighty-eight thousand, seven hundred fifty-two.

Scientific notation

• Scientific notation: 2.1345988752 × 10¹⁰

Factors of 21345988752

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 388

Divisors of 21345988752

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 27 33 36 41 44 48 54 66 72 82 88 99 108 123 132 144 164 176 198 216 246 264 297 328 331 369 396 432 451 492 528 594 656 662 738 792 902 984 993 1107 1188 1324 1353 1476 1584 1804 1968 1986 2214 2376 2648 2706 2952 2979 3608 3641 3972 4059 4428 4752 5296 5412 5904 5958 7216 7282 7944 8118 8856 8937 10824 10923 11916 12177 13571 14564 15888 16236 17712 17874 21648 21846 23832 24354 27142 29128 32472 32769 35748 40713 43692 47664 48708 54284 58256 64944 65538 71496 81426 87384 97416 98307 108568 109561 122139 131076 142992 149281 162852 174768 194832 196614 217136 219122 244278 262152 298562 325704 328683 366417 393228 438244 447843 488556 524304 597124 651408 657366 732834 786456 876488 895686 977112 986049 1194248 1205171 1314732 1343529 1465668 1572912 1752976 1791372 1954224 1972098 2388496 2410342 2629464 2687058 2931336 2958147 3582744 3615513 3944196 4030587 4492001 4820684 5258928 5374116 5862672 5916294 7165488 7231026 7888392 8061174 8984002 9641368 10748232 10846539 11832588 13476003 14462052 15776784 16122348 17968004 19282736 21496464 21693078 23665176 26952006 28924104 32244696 32539617 35936008 40428009 43386156 47330352 49412011 53904012 57848208 64489392 65079234 71872016 80856018 86772312 98824022 107808024 121284027 130158468 148236033 161712036 173544624 197648044 215616048 242568054 260316936 296472066 323424072 395296088 444708099 485136108 520633872 592944132 646848144 790592176 889416198 970272216 1185888264 1334124297 1778832396 1940544432 2371776528 2668248594 3557664792 5336497188 7115329584 10672994376 21345988752
• Sum of all divisors σ(n): 68678729280
• Sum of proper divisors (its aliquot sum) s(n): 47332740528
• 21345988752 is an abundant number, because the sum of its proper divisors (47332740528) is greater than itself. Its abundance is 25986751776

Bases of 21345988752

• Binary: 10011111000010100011111000010010000₂
• Hexadecimal: 0x4F851F090
• Base-36: 9T0UMC0

Squares and roots of 21345988752

• 21345988752 squared (21345988752²) is 455651235800510517504
• 21345988752 cubed (21345988752³) is 9726326154232597222498083115008
• The square root of 21345988752 is 146102.6651091621
• The cube root of 21345988752 is 2773.9934125683

Scales and comparisons

• 21,345,988,752 seconds is equal to 678 years, 38 weeks, 2 days, 1 hour, 19 minutes, 12 seconds.
• To count from 1 to 21,345,988,752 would take you about one thousand, three hundred fifty-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 21345988752 cubic inches would be around 231.2 feet tall.

Recreational maths with 21345988752

• 21345988752 backwards is 25788954312
• 21345988752 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21345988752's digits is 54
• More coming soon!