21357541440

Names of 21357541440

• Cardinal: 21357541440 can be written as Twenty-one billion, three hundred fifty-seven million, five hundred forty-one thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.135754144 × 10¹⁰

Factors of 21357541440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 139984

Divisors of 21357541440

• Number of divisors d(n): 168
• 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 53 60 64 72 80 90 96 106 120 144 159 160 180 192 212 240 265 288 318 320 360 424 477 480 530 576 636 720 795 848 954 960 1060 1272 1440 1590 1696 1908 2120 2385 2544 2880 3180 3392 3816 4240 4770 5088 6360 7632 8480 9540 10176 12720 15264 16960 19080 25440 30528 38160 50880 76320 139921 152640 279842 419763 559684 699605 839526 1119368 1259289 1399210 1679052 2098815 2238736 2518578 2798420 3358104 4197630 4477472 5037156 5596840 6296445 6716208 7415813 8395260 8954944 10074312 11193680 12592890 13432416 14831626 16790520 20148624 22247439 22387360 25185780 26864832 29663252 33581040 37079065 40297248 44494878 44774720 50371560 59326504 66742317 67162080 74158130 80594496 88989756 100743120 111237195 118653008 133484634 134324160 148316260 177979512 201486240 222474390 237306016 266969268 296632520 333711585 355959024 402972480 444948780 474612032 533938536 593265040 667423170 711918048 889897560 1067877072 1186530080 1334846340 1423836096 1779795120 2135754144 2373060160 2669692680 3559590240 4271508288 5339385360 7119180480 10678770720 21357541440
• Sum of all divisors σ(n): 74847635928
• Sum of proper divisors (its aliquot sum) s(n): 53490094488
• 21357541440 is an abundant number, because the sum of its proper divisors (53490094488) is greater than itself. Its abundance is 32132553048

Bases of 21357541440

• Binary: 10011111001000000100011100001000000₂
• Hexadecimal: 0x4F9023840
• Base-36: 9T7Q8G0

Squares and roots of 21357541440

• 21357541440 squared (21357541440²) is 456144576361317273600
• 21357541440 cubed (21357541440³) is 9742126692268078083899817984000
• The square root of 21357541440 is 146142.1959599623
• The cube root of 21357541440 is 2774.4937610743

Scales and comparisons

• 21,357,541,440 seconds is equal to 679 years, 5 weeks, 2 days, 18 hours, 24 minutes.
• To count from 1 to 21,357,541,440 would take you about one thousand, three hundred fifty-eight 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 21357541440 cubic inches would be around 231.2 feet tall.

Recreational maths with 21357541440

• 21357541440 backwards is 04414575312
• 21357541440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21357541440's digits is 36
• More coming soon!