21249211020

Names of 21249211020

• Cardinal: 21249211020 can be written as Twenty-one billion, two hundred forty-nine million, two hundred eleven thousand and twenty.

Scientific notation

• Scientific notation: 2.124921102 × 10¹⁰

Factors of 21249211020

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5734

Divisors of 21249211020

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 23 30 31 46 60 62 69 89 92 93 115 124 138 155 178 186 230 267 276 310 345 356 372 445 460 465 534 620 690 713 890 930 1068 1335 1380 1426 1780 1860 2047 2139 2670 2759 2852 3565 4094 4278 5340 5518 5581 6141 7130 8188 8277 8556 10235 10695 11036 11162 12282 13795 14260 16554 16743 20470 21390 22324 24564 27590 27905 30705 33108 33486 40940 41385 42780 55180 55810 61410 63457 66972 82770 83715 111620 122820 126914 128363 165540 167430 173011 190371 253828 256726 317285 334860 346022 380742 385089 496709 513452 519033 634570 641815 692044 761484 770178 865055 951855 993418 1038066 1269140 1283630 1490127 1540356 1730110 1903710 1925445 1986836 2076132 2483545 2567260 2595165 2980254 3460220 3807420 3850890 3979253 4967090 5190330 5960508 7450635 7701780 7958506 9934180 10380660 11424307 11937759 14901270 15397979 15917012 19896265 22848614 23875518 29802540 30795958 34272921 39792530 45697228 46193937 47751036 57121535 59688795 61591916 68545842 76989895 79585060 92387874 114243070 119377590 137091684 153979790 171364605 184775748 228486140 230969685 238755180 307959580 342729210 354153517 461939370 685458420 708307034 923878740 1062460551 1416614068 1770767585 2124921102 3541535170 4249842204 5312302755 7083070340 10624605510 21249211020
• Sum of all divisors σ(n): 64819077120
• Sum of proper divisors (its aliquot sum) s(n): 43569866100
• 21249211020 is an abundant number, because the sum of its proper divisors (43569866100) is greater than itself. Its abundance is 22320655080

Bases of 21249211020

• Binary: 10011110010100011010011101010001100₂
• Hexadecimal: 0x4F28D3A8C
• Base-36: 9RF8C5O

Squares and roots of 21249211020

• 21249211020 squared (21249211020²) is 451528968972489440400
• 21249211020 cubed (21249211020³) is 9594634343339460693781313208000
• The square root of 21249211020 is 145771.0911669389
• The cube root of 21249211020 is 2769.7948481131

Scales and comparisons

• 21,249,211,020 seconds is equal to 675 years, 34 weeks, 1 day, 22 hours, 37 minutes.
• To count from 1 to 21,249,211,020 would take you about one thousand, three hundred fifty-one 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 21249211020 cubic inches would be around 230.8 feet tall.

Recreational maths with 21249211020

• 21249211020 backwards is 02011294212
• The number of decimal digits it has is: 11
• The sum of 21249211020's digits is 24
• More coming soon!