145238720
145,238,720 is an even composite number composed of four prime numbers multiplied together.
145238720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred forty divisors.
Prime factorization of 145238720:
26 × 5 × 114 × 31
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 11 × 11 × 11 × 11 × 31)See below for interesting mathematical facts about the number 145238720 from the Numbermatics database.
Names of 145238720
- Cardinal: 145238720 can be written as One hundred forty-five million, two hundred thirty-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.4523872 × 108
Factors of 145238720
Divisors of 145238720
- Number of divisors d(n): 140
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Complete list of divisors:
1 2 4 5 8 10 11 16 20 22 31 32 40 44 55 62 64 80 88 110 121 124 155 160 176 220 242 248 310 320 341 352 440 484 496 605 620 682 704 880 968 992 1210 1240 1331 1364 1705 1760 1936 1984 2420 2480 2662 2728 3410 3520 3751 3872 4840 4960 5324 5456 6655 6820 7502 7744 9680 9920 10648 10912 13310 13640 14641 15004 18755 19360 21296 21824 26620 27280 29282 30008 37510 38720 41261 42592 53240 54560 58564 60016 73205 75020 82522 85184 106480 109120 117128 120032 146410 150040 165044 206305 212960 234256 240064 292820 300080 330088 412610 425920 453871 468512 585640 600160 660176 825220 907742 937024 1171280 1200320 1320352 1650440 1815484 2269355 2342560 2640704 3300880 3630968 4538710 4685120 6601760 7261936 9077420 13203520 14523872 18154840 29047744 36309680 72619360 145238720
- Sum of all divisors σ(n): 392704320
- Sum of proper divisors (its aliquot sum) s(n): 247465600
- 145238720 is an abundant number, because the sum of its proper divisors (247465600) is greater than itself. Its abundance is 102226880
Bases of 145238720
- Binary: 10001010100000101010110000002
- Hexadecimal: 0x8A82AC0
- Base-36: 2EGYWW
Squares and roots of 145238720
- 145238720 squared (1452387202) is 21094285787238400
- 145238720 cubed (1452387203) is 3063707067052697550848000
-
The
square root of 145238720 is 12051.5028108531 -
The
cube root of 145238720 is 525.6469364169
Scales and comparisons
How big is 145238720?- 145,238,720 seconds is equal to 4 years, 32 weeks, 1 day, 5 minutes, 20 seconds.
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To count from 1 to 145,238,720 would take you about six 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 145238720 cubic inches would be around 43.8 feet tall.
Recreational maths with 145238720
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