21487908312

Names of 21487908312

• Cardinal: 21487908312 can be written as Twenty-one billion, four hundred eighty-seven million, nine hundred eight thousand, three hundred twelve.

Scientific notation

• Scientific notation: 2.1487908312 × 10¹⁰

Factors of 21487908312

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 789

Divisors of 21487908312

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 18 24 26 27 36 39 52 54 61 72 78 104 108 117 122 156 183 216 234 244 312 331 351 366 379 468 488 549 662 702 732 758 793 936 993 1098 1137 1324 1404 1464 1516 1586 1647 1986 2196 2274 2379 2648 2808 2979 3032 3172 3294 3411 3972 4303 4392 4548 4758 4927 5958 6344 6588 6822 7137 7944 8606 8937 9096 9516 9854 10233 11916 12909 13176 13644 14274 14781 17212 17874 19032 19708 20191 20466 21411 23119 23832 25818 27288 28548 29562 34424 35748 38727 39416 40382 40932 42822 44343 46238 51636 57096 59124 60573 69357 71496 77454 80764 81864 85644 88686 92476 103272 116181 118248 121146 125449 133029 138714 154908 161528 171288 177372 181719 184952 208071 232362 242292 250898 262483 266058 277428 300547 309816 354744 363438 376347 416142 464724 484584 501796 524966 532116 545157 554856 601094 624213 726876 752694 787449 832284 901641 929448 1003592 1049932 1064232 1090314 1129041 1202188 1248426 1453752 1505388 1574898 1630837 1664568 1803282 2099864 2180628 2258082 2362347 2404376 2496852 2704923 3010776 3149796 3261674 3387123 3606564 4361256 4516164 4724694 4892511 4993704 5409846 6299592 6523348 6774246 7087041 7213128 7652389 8114769 9032328 9449388 9785022 10819692 13046696 13548492 14174082 14677533 15304778 16229538 18898776 19570044 21639384 22957167 27096984 28348164 29355066 30609556 32459076 39140088 44032599 45914334 56696328 58710132 61219112 64918152 68871501 88065198 91828668 99481057 117420264 137743002 176130396 183657336 198962114 206614503 275486004 298443171 352260792 397924228 413229006 550972008 596886342 795848456 826458012 895329513 1193772684 1652916024 1790659026 2387545368 2685988539 3581318052 5371977078 7162636104 10743954156 21487908312
• Sum of all divisors σ(n): 65704128000
• Sum of proper divisors (its aliquot sum) s(n): 44216219688
• 21487908312 is an abundant number, because the sum of its proper divisors (44216219688) is greater than itself. Its abundance is 22728311376

Bases of 21487908312

• Binary: 10100000000110001110111010111011000₂
• Hexadecimal: 0x500C775D8
• Base-36: 9VDCG60

Squares and roots of 21487908312

• 21487908312 squared (21487908312²) is 461730203624918689344
• 21487908312 cubed (21487908312³) is 9921616280373342835079083427328
• The square root of 21487908312 is 146587.5448733621
• The cube root of 21487908312 is 2780.1275027351

Scales and comparisons

• 21,487,908,312 seconds is equal to 683 years, 12 weeks, 6 days, 15 hours, 25 minutes, 12 seconds.
• To count from 1 to 21,487,908,312 would take you about one thousand, three hundred sixty-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 21487908312 cubic inches would be around 231.7 feet tall.

Recreational maths with 21487908312

• 21487908312 backwards is 21380978412
• The number of decimal digits it has is: 11
• The sum of 21487908312's digits is 45
• More coming soon!