155311985

155,311,985 is an odd composite number composed of four prime numbers multiplied together.

What does the number 155311985 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

155311985 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 155311985:

5 × 19 × 23 × 71081

See below for interesting mathematical facts about the number 155311985 from the Numbermatics database.

Names of 155311985

Cardinal: 155311985 can be written as One hundred fifty-five million, three hundred eleven thousand, nine hundred eighty-five.

Scientific notation

Scientific notation: 1.55311985 × 10⁸

Factors of 155311985

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 71128

Divisors of 155311985

Number of divisors d(n): 16
Complete list of divisors:
1 5 19 23 95 115 437 2185 71081 355405 1350539 1634863 6752695 8174315 31062397 155311985
Sum of all divisors σ(n): 204716160
Sum of proper divisors (its aliquot sum) s(n): 49404175
155311985 is a deficient number, because the sum of its proper divisors (49404175) is less than itself. Its deficiency is 105907810

Bases of 155311985

Binary: 1001010000011101111101110001₂
Hexadecimal: 0x941DF71
Base-36: 2KGVHT

Squares and roots of 155311985

155311985 squared (155311985²) is 24121812684640225
155311985 cubed (155311985³) is 3746406609849652355596625
The square root of 155311985 is 12462.4229185179
The cube root of 155311985 is 537.5286993871

Scales and comparisons

How big is 155311985?

155,311,985 seconds is equal to 4 years, 48 weeks, 5 days, 14 hours, 13 minutes, 5 seconds.
To count from 1 to 155,311,985 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 155311985 cubic inches would be around 44.8 feet tall.

Recreational maths with 155311985

155311985 backwards is 589113551
The number of decimal digits it has is: 9
The sum of 155311985's digits is 38
More coming soon!

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The information we have on file for 155311985 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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