21398189472

Names of 21398189472

• Cardinal: 21398189472 can be written as Twenty-one billion, three hundred ninety-eight million, one hundred eighty-nine thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1398189472 × 10¹⁰

Factors of 21398189472

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1939

Divisors of 21398189472

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 23 24 27 32 33 36 44 46 48 53 54 66 69 72 88 92 96 99 106 108 132 138 144 159 176 184 198 207 212 216 253 264 276 288 297 318 352 368 396 414 424 432 477 506 528 552 583 594 621 636 736 759 792 828 848 864 954 1012 1056 1104 1166 1188 1219 1242 1272 1431 1518 1584 1656 1696 1749 1847 1908 2024 2208 2277 2332 2376 2438 2484 2544 2862 3036 3168 3312 3498 3657 3694 3816 4048 4554 4664 4752 4876 4968 5088 5247 5541 5724 6072 6624 6831 6996 7314 7388 7632 8096 9108 9328 9504 9752 9936 10494 10971 11082 11448 12144 13409 13662 13992 14628 14776 15264 15741 16623 18216 18656 19504 19872 20317 20988 21942 22164 22896 24288 26818 27324 27984 29256 29552 31482 32913 33246 36432 39008 40227 40634 41976 42481 43884 44328 45792 49869 53636 54648 55968 58512 59104 60951 62964 65826 66492 72864 80454 81268 83952 84962 87768 88656 97891 99738 107272 109296 117024 120681 121902 125928 127443 131652 132984 160908 162536 167904 169924 175536 177312 182853 195782 199476 214544 218592 241362 243804 251856 254886 263304 265968 293673 321816 325072 339848 351072 362043 365706 382329 391564 398952 429088 467291 482724 487608 503712 509772 526608 531936 548559 587346 643632 650144 679696 724086 731412 764658 783128 797904 881019 934582 965448 975216 1019544 1053216 1076801 1097118 1146987 1174692 1287264 1359392 1401873 1448172 1462824 1529316 1566256 1595808 1762038 1869164 1930896 1950432 2039088 2153602 2194236 2251493 2293974 2349384 2643057 2803746 2896344 2925648 3058632 3132512 3230403 3524076 3738328 3861792 4078176 4205619 4307204 4388472 4502986 4587948 4698768 5286114 5607492 5792688 5851296 6117264 6460806 6754479 7048152 7476656 8411238 8614408 8776944 9005972 9175896 9397536 9691209 10572228 11214984 11585376 12234528 12616857 12921612 13508958 14096304 14953312 16822476 17228816 17553888 18011944 18351792 19382418 20263437 21144456 22429968 24766423 25233714 25843224 27017916 28192608 29073627 33644952 34457632 36023888 36703584 38764836 40526874 42288912 44859936 49532846 50467428 51686448 54035832 58147254 60790311 67289904 72047776 74299269 77529672 81053748 84577824 99065692 100934856 103372896 108071664 116294508 121580622 134579808 148598538 155059344 162107496 198131384 201869712 216143328 222897807 232589016 243161244 297197076 310118688 324214992 396262768 403739424 445795614 465178032 486322488 594394152 648429984 668693421 792525536 891591228 930356064 972644976 1188788304 1337386842 1783182456 1945289952 2377576608 2674773684 3566364912 5349547368 7132729824 10699094736 21398189472
• Sum of all divisors σ(n): 72425041920
• Sum of proper divisors (its aliquot sum) s(n): 51026852448
• 21398189472 is an abundant number, because the sum of its proper divisors (51026852448) is greater than itself. Its abundance is 29628662976

Bases of 21398189472

• Binary: 10011111011011011100111010110100000₂
• Hexadecimal: 0x4FB6E75A0
• Base-36: 9TVXGO0

Squares and roots of 21398189472

• 21398189472 squared (21398189472²) is 457882512679611638784
• 21398189472 cubed (21398189472³) is 9797856762233772278076455682048
• The square root of 21398189472 is 146281.1999950779
• The cube root of 21398189472 is 2776.2527999949

Scales and comparisons

• 21,398,189,472 seconds is equal to 680 years, 20 weeks, 4 days, 5 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,398,189,472 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 21398189472 cubic inches would be around 231.4 feet tall.

Recreational maths with 21398189472

• 21398189472 backwards is 27498189312
• 21398189472 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21398189472's digits is 54
• More coming soon!