158867992 has 32 divisors (see below), whose sum is σ = 329119200. Its totient is φ = 71509504.

The previous prime is 158867953. The next prime is 158868013. The reversal of 158867992 is 299768851.

It is a super-2 number, since 2×158867992² = 50478077764224128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22267 + ... + 28522.

It is an arithmetic number, because the mean of its divisors is an integer number (10284975).

Almost surely, 2^158867992 is an apocalyptic number.

It is an amenable number.

158867992 is an abundant number, since it is smaller than the sum of its proper divisors (170251208).

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

158867992 is a wasteful number, since it uses less digits than its factorization.

158867992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50835 (or 50831 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 55.

The square root of 158867992 is about 12604.2846683182. The cubic root of 158867992 is about 541.6001826198.

The spelling of 158867992 in words is "one hundred fifty-eight million, eight hundred sixty-seven thousand, nine hundred ninety-two".