87342172 has 12 divisors (see below), whose sum is σ = 153182176. Its totient is φ = 43575840.

The previous prime is 87342139. The next prime is 87342181. The reversal of 87342172 is 27124378.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21729 + ... + 25432.

Almost surely, 2^87342172 is an apocalyptic number.

It is an amenable number.

87342172 is a deficient number, since it is larger than the sum of its proper divisors (65840004).

87342172 is a wasteful number, since it uses less digits than its factorization.

87342172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47628 (or 47626 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 87342172 is about 9345.7033978187. The cubic root of 87342172 is about 443.6849142921.

The spelling of 87342172 in words is "eighty-seven million, three hundred forty-two thousand, one hundred seventy-two".