21398378577920

Names of 21398378577920

• Cardinal: 21398378577920 can be written as Twenty-one trillion, three hundred ninety-eight billion, three hundred seventy-eight million, five hundred seventy-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.139837857792 × 10¹³

Factors of 21398378577920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 20
• Sum of prime factors: 47745

Divisors of 21398378577920

• Number of divisors d(n): 204
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 37 40 64 74 80 128 148 160 185 256 296 320 370 512 592 640 740 1024 1184 1280 1369 1480 2048 2368 2560 2738 2960 4096 4736 5120 5476 5920 6845 8192 9472 10240 10952 11840 13690 16384 18944 20480 21904 23680 27380 32768 37888 40960 43808 47360 47701 54760 65536 75776 81920 87616 94720 95402 109520 151552 163840 175232 189440 190804 219040 238505 303104 327680 350464 378880 381608 438080 477010 606208 700928 757760 763216 876160 954020 1212416 1401856 1515520 1526432 1752320 1764937 1908040 2424832 2803712 3031040 3052864 3504640 3529874 3816080 5607424 6062080 6105728 7009280 7059748 7632160 8824685 11214848 12124160 12211456 14018560 14119496 15264320 17649370 22429696 24422912 28037120 28238992 30528640 35298740 44859392 48845824 56074240 56477984 61057280 65302669 70597480 89718784 97691648 112148480 112955968 122114560 130605338 141194960 195383296 224296960 225911936 244229120 261210676 282389920 326513345 390766592 448593920 451823872 488458240 522421352 564779840 653026690 781533184 903647744 976916480 1044842704 1129559680 1306053380 1563066368 1807295488 1953832960 2089685408 2259119360 2612106760 3126132736 3614590976 3907665920 4179370816 4518238720 5224213520 7229181952 7815331840 8358741632 9036477440 10448427040 14458363904 15630663680 16717483264 18072954880 20896854080 28916727808 33434966528 36145909760 41793708160 57833455616 66869933056 72291819520 83587416320 115666911232 133739866112 144583639040 167174832640 267479732224 289167278080 334349665280 534959464448 578334556160 668699330560 1069918928896 1337398661120 2139837857792 2674797322240 4279675715584 5349594644480 10699189288960 21398378577920
• Sum of all divisors σ(n): 52782328924164
• Sum of proper divisors (its aliquot sum) s(n): 31383950346244
• 21398378577920 is an abundant number, because the sum of its proper divisors (31383950346244) is greater than itself. Its abundance is 9985571768324

Bases of 21398378577920

• Binary: 100110111011000110010110000010000000000000000₂
• Hexadecimal: 0x137632C10000
• Base-36: 7L2A245Q8

Squares and roots of 21398378577920

• 21398378577920 squared (21398378577920²) is 457890605763985561511526400
• 21398378577920 cubed (21398378577920³) is 9798116529410880714888428972920537088000
• The square root of 21398378577920 is 4625838.1486947855
• The cube root of 21398378577920 is 27762.6097832373

Scales and comparisons

• 21,398,378,577,920 seconds is equal to 680,402 years, 12 weeks, 6 days, 17 hours, 25 minutes, 20 seconds.
• To count from 1 to 21,398,378,577,920 would take you about one million, seven hundred one thousand and five 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 21398378577920 cubic inches would be around 2313.6 feet tall.

Recreational maths with 21398378577920

• 21398378577920 backwards is 02977587389312
• The number of decimal digits it has is: 14
• The sum of 21398378577920's digits is 71
• More coming soon!