165145140
165,145,140 is an even composite number composed of six prime numbers multiplied together.
165145140 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 165145140:
22 × 32 × 5 × 17 × 29 × 1861
(2 × 2 × 3 × 3 × 5 × 17 × 29 × 1861)See below for interesting mathematical facts about the number 165145140 from the Numbermatics database.
Names of 165145140
- Cardinal: 165145140 can be written as One hundred sixty-five million, one hundred forty-five thousand, one hundred forty.
Scientific notation
- Scientific notation: 1.6514514 × 108
Factors of 165145140
Divisors of 165145140
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 17 18 20 29 30 34 36 45 51 58 60 68 85 87 90 102 116 145 153 170 174 180 204 255 261 290 306 340 348 435 493 510 522 580 612 765 870 986 1020 1044 1305 1479 1530 1740 1861 1972 2465 2610 2958 3060 3722 4437 4930 5220 5583 5916 7395 7444 8874 9305 9860 11166 14790 16749 17748 18610 22185 22332 27915 29580 31637 33498 37220 44370 53969 55830 63274 66996 83745 88740 94911 107938 111660 126548 158185 161907 167490 189822 215876 269845 284733 316370 323814 334980 379644 474555 485721 539690 569466 632740 647628 809535 917473 949110 971442 1079380 1138932 1423665 1619070 1834946 1898220 1942884 2428605 2752419 2847330 3238140 3669892 4587365 4857210 5504838 5694660 8257257 9174730 9714420 11009676 13762095 16514514 18349460 27524190 33029028 41286285 55048380 82572570 165145140
- Sum of all divisors σ(n): 548992080
- Sum of proper divisors (its aliquot sum) s(n): 383846940
- 165145140 is an abundant number, because the sum of its proper divisors (383846940) is greater than itself. Its abundance is 218701800
Bases of 165145140
- Binary: 10011101011111101010001101002
- Hexadecimal: 0x9D7EA34
- Base-36: 2QBMT0
Squares and roots of 165145140
- 165145140 squared (1651451402) is 27272917265619600
- 165145140 cubed (1651451403) is 4503989740039166028744000
-
The
square root of 165145140 is 12850.8809036579 -
The
cube root of 165145140 is 548.6414292879
Scales and comparisons
How big is 165145140?- 165,145,140 seconds is equal to 5 years, 13 weeks, 9 hours, 39 minutes.
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To count from 1 to 165,145,140 would take you about seven 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 165145140 cubic inches would be around 45.7 feet tall.
Recreational maths with 165145140
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