158915232 has 108 divisors (see below), whose sum is σ = 525743946. Its totient is φ = 45400320.

The previous prime is 158915219. The next prime is 158915293. The reversal of 158915232 is 232519851.

It can be written as a sum of positive squares in only one way, i.e., 86936976 + 71978256 = 9324^2 + 8484^2 .

It is a super-2 number, since 2×158915232² = 50508101923227648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8482 + ... + 19742.

Almost surely, 2^158915232 is an apocalyptic number.

158915232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158915232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262871973).

158915232 is an abundant number, since it is smaller than the sum of its proper divisors (366828714).

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

158915232 is a wasteful number, since it uses less digits than its factorization.

158915232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11291 (or 11273 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 158915232 is about 12606.1584949579. The cubic root of 158915232 is about 541.6538595894.

The spelling of 158915232 in words is "one hundred fifty-eight million, nine hundred fifteen thousand, two hundred thirty-two".