18381238272

Names of 18381238272

• Cardinal: 18381238272 can be written as Eighteen billion, three hundred eighty-one million, two hundred thirty-eight thousand, two hundred seventy-two.

Scientific notation

• Scientific notation: 1.8381238272 × 10¹⁰

Factors of 18381238272

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 155

Divisors of 18381238272

• Number of divisors d(n): 234
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 47 48 64 72 94 96 103 128 141 144 188 192 206 256 282 288 309 376 384 412 423 512 564 576 618 752 768 824 846 927 1024 1128 1152 1236 1504 1536 1648 1692 1854 2048 2256 2304 2472 3008 3072 3296 3384 3708 4096 4512 4608 4841 4944 6016 6144 6592 6768 7416 9024 9216 9682 9888 10609 12032 12288 13184 13536 14523 14832 18048 18432 19364 19776 21218 24064 26368 27072 29046 29664 31827 36096 36864 38728 39552 42436 43569 48128 52736 54144 58092 59328 63654 72192 77456 79104 84872 87138 95481 96256 105472 108288 116184 118656 127308 144384 154912 158208 169744 174276 190962 192512 210944 216576 232368 237312 254616 288768 309824 316416 339488 348552 381924 421888 433152 464736 474624 498623 509232 577536 619648 632832 678976 697104 763848 866304 929472 949248 997246 1018464 1239296 1265664 1357952 1394208 1495869 1527696 1732608 1858944 1898496 1994492 2036928 2478592 2715904 2788416 2991738 3055392 3717888 3796992 3988984 4073856 4487607 4957184 5431808 5576832 5983476 6110784 7435776 7977968 8147712 8975214 9914368 10863616 11153664 11966952 12221568 14871552 15955936 16295424 17950428 19828736 21727232 22307328 23933904 24443136 29743104 31911872 32590848 35900856 43454464 44614656 47867808 48886272 59486208 63823744 65181696 71801712 89229312 95735616 97772544 127647488 130363392 143603424 178458624 191471232 195545088 255294976 287206848 382942464 391090176 510589952 574413696 765884928 1021179904 1148827392 1531769856 2042359808 2297654784 3063539712 4595309568 6127079424 9190619136 18381238272
• Sum of all divisors σ(n): 54756114192
• Sum of proper divisors (its aliquot sum) s(n): 36374875920
• 18381238272 is an abundant number, because the sum of its proper divisors (36374875920) is greater than itself. Its abundance is 17993637648

Bases of 18381238272

• Binary: 10001000111100110110111000000000000₂
• Hexadecimal: 0x4479B7000
• Base-36: 8FZPQ80

Squares and roots of 18381238272

• 18381238272 squared (18381238272²) is 337869920412037545984
• 18381238272 cubed (18381238272³) is 6210467512035338549742060699648
• The square root of 18381238272 is 135577.4253775311
• The cube root of 18381238272 is 2639.1146342413

Scales and comparisons

• 18,381,238,272 seconds is equal to 584 years, 24 weeks, 1 day, 19 hours, 31 minutes, 12 seconds.
• To count from 1 to 18,381,238,272 would take you about one thousand, one hundred sixty-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 18381238272 cubic inches would be around 219.9 feet tall.

Recreational maths with 18381238272

• 18381238272 backwards is 27283218381
• The number of decimal digits it has is: 11
• The sum of 18381238272's digits is 45
• More coming soon!