158632172 has 24 divisors (see below), whose sum is σ = 286967184. Its totient is φ = 76669632.

The previous prime is 158632171. The next prime is 158632181. The reversal of 158632172 is 271236851.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (158632171) by changing a digit.

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, 19823 + ... + 26649.

It is an arithmetic number, because the mean of its divisors is an integer number (11956966).

Almost surely, 2^158632172 is an apocalyptic number.

It is an amenable number.

158632172 is a deficient number, since it is larger than the sum of its proper divisors (128335012).

158632172 is a wasteful number, since it uses less digits than its factorization.

158632172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7025 (or 7023 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 158632172 is about 12594.9264388483. The cubic root of 158632172 is about 541.3320702905.

The spelling of 158632172 in words is "one hundred fifty-eight million, six hundred thirty-two thousand, one hundred seventy-two".