21135318880

Names of 21135318880

• Cardinal: 21135318880 can be written as Twenty-one billion, one hundred thirty-five million, three hundred eighteen thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 2.113531888 × 10¹⁰

Factors of 21135318880

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1241

Divisors of 21135318880

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 31 32 40 52 62 65 80 104 124 130 155 160 208 248 260 310 403 416 433 496 520 620 757 806 866 992 1040 1240 1514 1612 1732 2015 2080 2165 2480 3028 3224 3464 3785 4030 4330 4960 5629 6056 6448 6928 7570 8060 8660 9841 11258 12112 12896 13423 13856 15140 16120 17320 19682 22516 23467 24224 26846 28145 30280 32240 34640 39364 45032 46934 49205 53692 56290 60560 64480 67115 69280 78728 90064 93868 98410 107384 112580 117335 121120 134230 157456 174499 180128 187736 196820 214768 225160 234670 268460 305071 314912 327781 348998 375472 393640 429536 450320 469340 536920 610142 655562 697996 750944 787280 872495 900640 938680 1073840 1220284 1311124 1395992 1525355 1574560 1638905 1744990 1877360 2147680 2440568 2622248 2791984 3050710 3277810 3489980 3754720 4261153 4881136 5244496 5583968 6101420 6555620 6979960 8522306 9762272 10161211 10488992 12202840 13111240 13959920 17044612 20322422 21305765 24405680 26222480 27919840 34089224 40644844 42611530 48811360 50806055 52444960 68178448 81289688 85223060 101612110 132095743 136356896 162579376 170446120 203224220 264191486 325158752 340892240 406448440 528382972 660478715 681784480 812896880 1056765944 1320957430 1625793760 2113531888 2641914860 4227063776 5283829720 10567659440 21135318880
• Sum of all divisors σ(n): 55709434368
• Sum of proper divisors (its aliquot sum) s(n): 34574115488
• 21135318880 is an abundant number, because the sum of its proper divisors (34574115488) is greater than itself. Its abundance is 13438796608

Bases of 21135318880

• Binary: 10011101011110000110101111101100000₂
• Hexadecimal: 0x4EBC35F60
• Base-36: 9PJF8F4

Squares and roots of 21135318880

• 21135318880 squared (21135318880²) is 446701704159284454400
• 21135318880 cubed (21135318880³) is 9441182961645899256370819072000
• The square root of 21135318880 is 145379.9122299913
• The cube root of 21135318880 is 2764.8374382179

Scales and comparisons

• 21,135,318,880 seconds is equal to 672 years, 1 week, 6 days, 17 hours, 54 minutes, 40 seconds.
• To count from 1 to 21,135,318,880 would take you about one thousand, three hundred forty-four 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 21135318880 cubic inches would be around 230.4 feet tall.

Recreational maths with 21135318880

• 21135318880 backwards is 08881353112
• 21135318880 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21135318880's digits is 40
• More coming soon!