158431936 has 56 divisors (see below), whose sum is σ = 341873840. Its totient is φ = 72410112.

The previous prime is 158431921. The next prime is 158431951. The reversal of 158431936 is 639134851.

It is an interprime number because it is at equal distance from previous prime (158431921) and next prime (158431951).

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 7 ways as a sum of consecutive naturals, for example, 89815 + ... + 91561.

It is an arithmetic number, because the mean of its divisors is an integer number (6104890).

Almost surely, 2^158431936 is an apocalyptic number.

158431936 is a gapful number since it is divisible by the number (16) 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 158431936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170936920).

158431936 is an abundant number, since it is smaller than the sum of its proper divisors (183441904).

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

158431936 is a wasteful number, since it uses less digits than its factorization.

158431936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1871 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 158431936 is about 12586.9748549840. The cubic root of 158431936 is about 541.1042060296.

The spelling of 158431936 in words is "one hundred fifty-eight million, four hundred thirty-one thousand, nine hundred thirty-six".