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230055156 = 223261104761
BaseRepresentation
bin11011011011001…
…01110011110100
3121000220000100100
431231211303310
5432343231111
634454514100
75462302512
oct1555456364
9530800310
10230055156
11108950931
1265065930
133887b416
14227a74b2
15152e4756
hexdb65cf4

230055156 has 36 divisors (see below), whose sum is σ = 591067204. Its totient is φ = 75427200.

The previous prime is 230055149. The next prime is 230055157. The reversal of 230055156 is 651550032.

It can be written as a sum of positive squares in 2 ways, for example, as 18352656 + 211702500 = 4284^2 + 14550^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230055157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50185 + ... + 54576.

Almost surely, 2230055156 is an apocalyptic number.

It is an amenable number.

230055156 is an abundant number, since it is smaller than the sum of its proper divisors (361012048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230055156 is a wasteful number, since it uses less digits than its factorization.

230055156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104832 (or 104827 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 230055156 is about 15167.5692185663. The cubic root of 230055156 is about 612.7415399435.

The spelling of 230055156 in words is "two hundred thirty million, fifty-five thousand, one hundred fifty-six".

Divisors: 1 2 3 4 6 9 12 18 36 61 122 183 244 366 549 732 1098 2196 104761 209522 314283 419044 628566 942849 1257132 1885698 3771396 6390421 12780842 19171263 25561684 38342526 57513789 76685052 115027578 230055156