21126723840

Names of 21126723840

• Cardinal: 21126723840 can be written as Twenty-one billion, one hundred twenty-six million, seven hundred twenty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.112672384 × 10¹⁰

Factors of 21126723840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 11848

Divisors of 21126723840

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 64 72 80 90 96 120 128 144 157 160 180 192 240 256 288 314 320 360 384 471 480 576 628 640 720 768 785 942 960 1152 1256 1280 1413 1440 1570 1884 1920 2304 2355 2512 2826 2880 3140 3768 3840 4710 5024 5652 5760 6280 7065 7536 9420 10048 11304 11520 11681 12560 14130 15072 18840 20096 22608 23362 25120 28260 30144 35043 37680 40192 45216 46724 50240 56520 58405 60288 70086 75360 90432 93448 100480 105129 113040 116810 120576 140172 150720 175215 180864 186896 200960 210258 226080 233620 280344 301440 350430 361728 373792 420516 452160 467240 525645 560688 602880 700860 747584 841032 904320 934480 1051290 1121376 1401720 1495168 1682064 1808640 1833917 1868960 2102580 2242752 2803440 2990336 3364128 3667834 3737920 4205160 4485504 5501751 5606880 6728256 7335668 7475840 8410320 8971008 9169585 11003502 11213760 13456512 14671336 14951680 16505253 16820640 18339170 22007004 22427520 26913024 27508755 29342672 33010506 33641280 36678340 44014008 44855040 55017510 58685344 66021012 67282560 73356680 82526265 88028016 110035020 117370688 132042024 134565120 146713360 165052530 176056032 220070040 234741376 264084048 293426720 330105060 352112064 440140080 469482752 528168096 586853440 660210120 704224128 880280160 1056336192 1173706880 1320420240 1408448256 1760560320 2112672384 2347413760 2640840480 3521120640 4225344768 5281680960 7042241280 10563361920 21126723840
• Sum of all divisors σ(n): 73568142648
• Sum of proper divisors (its aliquot sum) s(n): 52441418808
• 21126723840 is an abundant number, because the sum of its proper divisors (52441418808) is greater than itself. Its abundance is 31314694968

Bases of 21126723840

• Binary: 10011101011010000000011100100000000₂
• Hexadecimal: 0x4EB403900
• Base-36: 9PEB0G0

Squares and roots of 21126723840

• 21126723840 squared (21126723840²) is 446338460211624345600
• 21126723840 cubed (21126723840³) is 9429669388061815507311919104000
• The square root of 21126723840 is 145350.3486063931
• The cube root of 21126723840 is 2764.4625978763

Scales and comparisons

• 21,126,723,840 seconds is equal to 671 years, 39 weeks, 5 days, 6 hours, 24 minutes.
• To count from 1 to 21,126,723,840 would take you about one thousand, three hundred forty-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 21126723840 cubic inches would be around 230.4 feet tall.

Recreational maths with 21126723840

• 21126723840 backwards is 04832762112
• 21126723840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21126723840's digits is 36
• More coming soon!