158132172 has 24 divisors (see below), whose sum is σ = 402518592. Its totient is φ = 47918800.

The previous prime is 158132171. The next prime is 158132173. The reversal of 158132172 is 271231851.

It is an interprime number because it is at equal distance from previous prime (158132171) and next prime (158132173).

It is not an unprimeable number, because it can be changed into a prime (158132171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598854 + ... + 599117.

It is an arithmetic number, because the mean of its divisors is an integer number (16771608).

Almost surely, 2^158132172 is an apocalyptic number.

158132172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

158132172 is an abundant number, since it is smaller than the sum of its proper divisors (244386420).

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

158132172 is a wasteful number, since it uses less digits than its factorization.

158132172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197989 (or 1197987 counting only the distinct ones).

The product of its digits is 3360, while the sum is 30.

The square root of 158132172 is about 12575.0615107840. The cubic root of 158132172 is about 540.7627219134.

The spelling of 158132172 in words is "one hundred fifty-eight million, one hundred thirty-two thousand, one hundred seventy-two".