161129728
161,129,728 is an even composite number composed of four prime numbers multiplied together.
161129728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 161129728:
28 × 19 × 157 × 211
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 19 × 157 × 211)See below for interesting mathematical facts about the number 161129728 from the Numbermatics database.
Names of 161129728
- Cardinal: 161129728 can be written as One hundred sixty-one million, one hundred twenty-nine thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 1.61129728 × 108
Factors of 161129728
Divisors of 161129728
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 8 16 19 32 38 64 76 128 152 157 211 256 304 314 422 608 628 844 1216 1256 1688 2432 2512 2983 3376 4009 4864 5024 5966 6752 8018 10048 11932 13504 16036 20096 23864 27008 32072 33127 40192 47728 54016 64144 66254 95456 128288 132508 190912 256576 265016 381824 513152 530032 629413 763648 1026304 1060064 1258826 2120128 2517652 4240256 5035304 8480512 10070608 20141216 40282432 80564864 161129728
- Sum of all divisors σ(n): 342329120
- Sum of proper divisors (its aliquot sum) s(n): 181199392
- 161129728 is an abundant number, because the sum of its proper divisors (181199392) is greater than itself. Its abundance is 20069664
Bases of 161129728
- Binary: 10011001101010100101000000002
- Hexadecimal: 0x99AA500
- Base-36: 2NXKHS
Squares and roots of 161129728
- 161129728 squared (1611297282) is 25962789245353984
- 161129728 cubed (1611297283) is 4183377169225212705636352
-
The
square root of 161129728 is 12693.6885104369 -
The
cube root of 161129728 is 544.1582584539
Scales and comparisons
How big is 161129728?- 161,129,728 seconds is equal to 5 years, 6 weeks, 2 days, 22 hours, 15 minutes, 28 seconds.
-
To count from 1 to 161,129,728 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 161129728 cubic inches would be around 45.3 feet tall.
Recreational maths with 161129728
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The information we have on file for 161129728 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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