158032172 has 24 divisors (see below), whose sum is σ = 297894912. Its totient is φ = 73141200.

The previous prime is 158032157. The next prime is 158032201. The reversal of 158032172 is 271230851.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

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, 24854 + ... + 30557.

It is an arithmetic number, because the mean of its divisors is an integer number (12412288).

Almost surely, 2^158032172 is an apocalyptic number.

It is an amenable number.

158032172 is a deficient number, since it is larger than the sum of its proper divisors (139862740).

158032172 is a wasteful number, since it uses less digits than its factorization.

158032172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55469 (or 55467 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 158032172 is about 12571.0847582856. The cubic root of 158032172 is about 540.6487082701.

The spelling of 158032172 in words is "one hundred fifty-eight million, thirty-two thousand, one hundred seventy-two".