664729728
664,729,728 is an even composite number composed of four prime numbers multiplied together.
664729728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 664729728:
27 × 3 × 132 × 10243
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 13 × 13 × 10243)See below for interesting mathematical facts about the number 664729728 from the Numbermatics database.
Names of 664729728
- Cardinal: 664729728 can be written as Six hundred sixty-four million, seven hundred twenty-nine thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 6.64729728 × 108
Factors of 664729728
Divisors of 664729728
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 64 78 96 104 128 156 169 192 208 312 338 384 416 507 624 676 832 1014 1248 1352 1664 2028 2496 2704 4056 4992 5408 8112 10243 10816 16224 20486 21632 30729 32448 40972 61458 64896 81944 122916 133159 163888 245832 266318 327776 399477 491664 532636 655552 798954 983328 1065272 1311104 1597908 1731067 1966656 2130544 3195816 3462134 3933312 4261088 5193201 6391632 6924268 8522176 10386402 12783264 13848536 17044352 20772804 25566528 27697072 41545608 51133056 55394144 83091216 110788288 166182432 221576576 332364864 664729728
- Sum of all divisors σ(n): 1912145040
- Sum of proper divisors (its aliquot sum) s(n): 1247415312
- 664729728 is an abundant number, because the sum of its proper divisors (1247415312) is greater than itself. Its abundance is 582685584
Bases of 664729728
- Binary: 1001111001111011111000100000002
- Hexadecimal: 0x279EF880
- Base-36: AZRGQO
Squares and roots of 664729728
- 664729728 squared (6647297282) is 441865611286953984
- 664729728 cubed (6647297283) is 293721207603330651732836352
-
The
square root of 664729728 is 25782.3530345855 -
The
cube root of 664729728 is 872.7336081611
Scales and comparisons
How big is 664729728?- 664,729,728 seconds is equal to 21 years, 7 weeks, 15 hours, 8 minutes, 48 seconds.
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To count from 1 to 664,729,728 would take you about thirty-one 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 664729728 cubic inches would be around 72.7 feet tall.
Recreational maths with 664729728
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