21438136320

Names of 21438136320

• Cardinal: 21438136320 can be written as Twenty-one billion, four hundred thirty-eight million, one hundred thirty-six thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.143813632 × 10¹⁰

Factors of 21438136320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 24
• Sum of prime factors: 86

Divisors of 21438136320

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 29 30 32 40 47 48 58 60 64 80 87 94 96 116 120 128 141 145 160 174 188 192 232 235 240 256 282 290 320 348 376 384 435 464 470 480 512 564 580 640 696 705 752 768 870 928 940 960 1024 1128 1160 1280 1363 1392 1410 1504 1536 1740 1856 1880 1920 2048 2256 2320 2560 2726 2784 2820 3008 3072 3480 3712 3760 3840 4089 4096 4512 4640 5120 5452 5568 5640 6016 6144 6815 6960 7424 7520 7680 8178 8192 9024 9280 10240 10904 11136 11280 12032 12288 13630 13920 14848 15040 15360 16356 16384 18048 18560 20445 20480 21808 22272 22560 24064 24576 27260 27840 29696 30080 30720 32712 32768 36096 37120 40890 40960 43616 44544 45120 48128 49152 54520 55680 59392 60160 61440 65424 65536 72192 74240 81780 81920 87232 89088 90240 96256 98304 109040 111360 118784 120320 122880 130848 131072 144384 148480 163560 163840 174464 178176 180480 192512 196608 218080 222720 237568 240640 245760 261696 262144 288768 296960 327120 327680 348928 356352 360960 385024 393216 436160 445440 475136 481280 491520 523392 524288 577536 593920 654240 655360 697856 712704 721920 770048 786432 872320 890880 950272 962560 983040 1046784 1048576 1155072 1187840 1308480 1310720 1395712 1425408 1443840 1540096 1572864 1744640 1781760 1900544 1925120 1966080 2093568 2310144 2375680 2616960 2621440 2791424 2850816 2887680 3080192 3145728 3489280 3563520 3801088 3850240 3932160 4187136 4620288 4751360 5233920 5242880 5582848 5701632 5775360 6160384 6978560 7127040 7602176 7700480 7864320 8374272 9240576 9502720 10467840 11165696 11403264 11550720 12320768 13957120 14254080 15204352 15400960 15728640 16748544 18481152 19005440 20935680 22331392 22806528 23101440 24641536 27914240 28508160 30408704 30801920 33497088 36962304 38010880 41871360 44662784 45613056 46202880 49283072 55828480 57016320 61603840 66994176 73924608 76021760 83742720 89325568 91226112 92405760 111656960 114032640 123207680 133988352 147849216 152043520 167485440 178651136 184811520 223313920 228065280 246415360 267976704 334970880 357302272 369623040 446627840 456130560 535953408 669941760 714604544 739246080 893255680 1071906816 1339883520 1429209088 1786511360 2143813632 2679767040 3573022720 4287627264 5359534080 7146045440 10719068160 21438136320
• Sum of all divisors σ(n): 72477538560
• Sum of proper divisors (its aliquot sum) s(n): 51039402240
• 21438136320 is an abundant number, because the sum of its proper divisors (51039402240) is greater than itself. Its abundance is 29601265920

Bases of 21438136320

• Binary: 10011111101110100000000000000000000₂
• Hexadecimal: 0x4FDD00000
• Base-36: 9UJPNUO

Squares and roots of 21438136320

• 21438136320 squared (21438136320²) is 459593688874903142400
• 21438136320 cubed (21438136320³) is 9852832153911840993567571968000
• The square root of 21438136320 is 146417.6776212489
• The cube root of 21438136320 is 2777.9793262517

Scales and comparisons

• 21,438,136,320 seconds is equal to 681 years, 34 weeks, 4 days, 13 hours, 52 minutes.
• To count from 1 to 21,438,136,320 would take you about one thousand, three hundred sixty-three 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 21438136320 cubic inches would be around 231.5 feet tall.

Recreational maths with 21438136320

• 21438136320 backwards is 02363183412
• The number of decimal digits it has is: 11
• The sum of 21438136320's digits is 33
• More coming soon!