21225404736

Names of 21225404736

• Cardinal: 21225404736 can be written as Twenty-one billion, two hundred twenty-five million, four hundred four thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 2.1225404736 × 10¹⁰

Factors of 21225404736

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 21667

Divisors of 21225404736

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 144 192 288 576 1861 3722 5583 7444 11166 14888 16749 19801 22332 29776 33498 39602 44664 59403 59552 66996 79204 89328 118806 119104 133992 158408 178209 178656 237612 267984 316816 356418 357312 475224 535968 633632 712836 950448 1071936 1267264 1425672 1900896 2851344 3801792 5702688 11405376 36849661 73699322 110548983 147398644 221097966 294797288 331646949 442195932 589594576 663293898 884391864 1179189152 1326587796 1768783728 2358378304 2653175592 3537567456 5306351184 7075134912 10612702368 21225404736
• Sum of all divisors σ(n): 60874555924
• Sum of proper divisors (its aliquot sum) s(n): 39649151188
• 21225404736 is an abundant number, because the sum of its proper divisors (39649151188) is greater than itself. Its abundance is 18423746452

Bases of 21225404736

• Binary: 10011110001001000011111100101000000₂
• Hexadecimal: 0x4F121F940
• Base-36: 9R12340

Squares and roots of 21225404736

• 21225404736 squared (21225404736²) is 450517806207011229696
• 21225404736 cubed (21225404736³) is 9562422777518626351194662240256
• The square root of 21225404736 is 145689.4118870689
• The cube root of 21225404736 is 2768.7600934185

Scales and comparisons

• 21,225,404,736 seconds is equal to 674 years, 46 weeks, 6 days, 9 hours, 45 minutes, 36 seconds.
• To count from 1 to 21,225,404,736 would take you about one thousand, three hundred forty-nine 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 21225404736 cubic inches would be around 230.7 feet tall.

Recreational maths with 21225404736

• 21225404736 backwards is 63740452212
• 21225404736 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21225404736's digits is 36
• More coming soon!