21306147072

Names of 21306147072

• Cardinal: 21306147072 can be written as Twenty-one billion, three hundred six million, one hundred forty-seven thousand and seventy-two.

Scientific notation

• Scientific notation: 2.1306147072 × 10¹⁰

Factors of 21306147072

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2472

Divisors of 21306147072

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 49 56 64 84 96 98 112 128 147 168 192 196 224 256 257 294 336 384 392 448 514 588 672 768 771 784 896 1028 1176 1344 1542 1568 1792 1799 2056 2203 2352 2688 3084 3136 3598 4112 4406 4704 5376 5397 6168 6272 6609 7196 8224 8812 9408 10794 12336 12544 12593 13218 14392 15421 16448 17624 18816 21588 24672 25186 26436 28784 30842 32896 35248 37632 37779 43176 46263 49344 50372 52872 57568 61684 65792 70496 75558 86352 92526 98688 100744 105744 107947 115136 123368 140992 151116 172704 185052 197376 201488 211488 215894 230272 246736 281984 302232 323841 345408 370104 402976 422976 431788 460544 493472 563968 566171 604464 647682 690816 740208 805952 845952 863576 986944 1132342 1208928 1295364 1381632 1480416 1611904 1691904 1698513 1727152 1973888 2264684 2417856 2590728 2960832 3223808 3397026 3454304 3947776 3963197 4529368 4835712 5181456 5921664 6794052 6908608 7926394 9058736 9671424 10362912 11843328 11889591 13588104 13817216 15852788 18117472 20725824 23779182 27176208 27634432 27742379 31705576 36234944 41451648 47558364 54352416 55484758 63411152 72469888 82903296 83227137 95116728 108704832 110969516 126822304 144939776 166454274 190233456 217409664 221939032 253644608 332908548 380466912 434819328 443878064 507289216 665817096 760933824 887756128 1014578432 1331634192 1521867648 1775512256 2663268384 3043735296 3551024512 5326536768 7102049024 10653073536 21306147072
• Sum of all divisors σ(n): 66250177056
• Sum of proper divisors (its aliquot sum) s(n): 44944029984
• 21306147072 is an abundant number, because the sum of its proper divisors (44944029984) is greater than itself. Its abundance is 23637882912

Bases of 21306147072

• Binary: 10011110101111100100000000100000000₂
• Hexadecimal: 0x4F5F20100
• Base-36: 9SD4OAO

Squares and roots of 21306147072

• 21306147072 squared (21306147072²) is 453951903053694173184
• 21306147072 cubed (21306147072³) is 9671966010076293966767742517248
• The square root of 21306147072 is 145966.2531957301
• The cube root of 21306147072 is 2772.2664778001

Scales and comparisons

• 21,306,147,072 seconds is equal to 677 years, 24 weeks, 2 days, 22 hours, 11 minutes, 12 seconds.
• To count from 1 to 21,306,147,072 would take you about one thousand, three hundred fifty-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 21306147072 cubic inches would be around 231 feet tall.

Recreational maths with 21306147072

• 21306147072 backwards is 27074160312
• The number of decimal digits it has is: 11
• The sum of 21306147072's digits is 33
• More coming soon!