86172708 has 24 divisors (see below), whose sum is σ = 201513312. Its totient is φ = 28660864.

The previous prime is 86172707. The next prime is 86172727. The reversal of 86172708 is 80727168.

It is not an unprimeable number, because it can be changed into a prime (86172703) 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, 2085 + ... + 13292.

It is an arithmetic number, because the mean of its divisors is an integer number (8396388).

Almost surely, 2^86172708 is an apocalyptic number.

It is an amenable number.

86172708 is an abundant number, since it is smaller than the sum of its proper divisors (115340604).

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

86172708 is a wasteful number, since it uses less digits than its factorization.

86172708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15851 (or 15849 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 86172708 is about 9282.9256164207. The cubic root of 86172708 is about 441.6957769508.

It can be divided in two parts, 8617 and 2708, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 86172708 in words is "eighty-six million, one hundred seventy-two thousand, seven hundred eight".