21205047024

Names of 21205047024

• Cardinal: 21205047024 can be written as Twenty-one billion, two hundred five million, forty-seven thousand and twenty-four.

Scientific notation

• Scientific notation: 2.1205047024 × 10¹⁰

Factors of 21205047024

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 9631

Divisors of 21205047024

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 54 56 63 72 81 84 108 112 126 144 162 168 189 216 243 252 324 336 378 432 486 504 567 648 729 756 972 1008 1134 1296 1458 1512 1701 1944 2187 2268 2916 3024 3402 3888 4374 4536 5103 5832 6561 6804 8748 9072 9619 10206 11664 13122 13608 15309 17496 19238 19683 20412 26244 27216 28857 30618 34992 38476 39366 40824 45927 52488 57714 61236 67333 76952 78732 81648 86571 91854 104976 115428 122472 134666 137781 153904 157464 173142 183708 201999 230856 244944 259713 269332 275562 314928 346284 367416 403998 461712 519426 538664 551124 605997 692568 734832 779139 807996 1038852 1077328 1102248 1211994 1385136 1558278 1615992 1817991 2077704 2204496 2337417 2423988 3116556 3231984 3635982 4155408 4674834 4847976 5453973 6233112 7012251 7271964 9349668 9695952 10907946 12466224 14024502 14543928 16361919 18699336 21036753 21815892 28049004 29087856 32723838 37398672 42073506 43631784 49085757 56098008 63110259 65447676 84147012 87263568 98171514 112196016 126220518 130895352 147257271 168294024 189330777 196343028 252441036 261790704 294514542 336588048 378661554 392686056 441771813 504882072 589029084 757323108 785372112 883543626 1009764144 1178058168 1325315439 1514646216 1767087252 2356116336 2650630878 3029292432 3534174504 5301261756 7068349008 10602523512 21205047024
• Sum of all divisors σ(n): 70437178240
• Sum of proper divisors (its aliquot sum) s(n): 49232131216
• 21205047024 is an abundant number, because the sum of its proper divisors (49232131216) is greater than itself. Its abundance is 28027084192

Bases of 21205047024

• Binary: 10011101111111010110101011011110000₂
• Hexadecimal: 0x4EFEB56F0
• Base-36: 9QOXR00

Squares and roots of 21205047024

• 21205047024 squared (21205047024²) is 449654019290051256576
• 21205047024 cubed (21205047024³) is 9534934623576139991064369229824
• The square root of 21205047024 is 145619.5283057873
• The cube root of 21205047024 is 2767.8746191273

Scales and comparisons

• 21,205,047,024 seconds is equal to 674 years, 13 weeks, 1 day, 18 hours, 50 minutes, 24 seconds.
• To count from 1 to 21,205,047,024 would take you about one thousand, three hundred forty-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 21205047024 cubic inches would be around 230.7 feet tall.

Recreational maths with 21205047024

• 21205047024 backwards is 42074050212
• 21205047024 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21205047024's digits is 27
• More coming soon!