72162108 has 36 divisors (see below), whose sum is σ = 186295200. Its totient is φ = 23541696.

The previous prime is 72162089. The next prime is 72162119. The reversal of 72162108 is 80126127.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 19633 + ... + 23016.

Almost surely, 2^72162108 is an apocalyptic number.

It is an amenable number.

72162108 is an abundant number, since it is smaller than the sum of its proper divisors (114133092).

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

72162108 is a wasteful number, since it uses less digits than its factorization.

72162108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42706 (or 42701 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 72162108 is about 8494.8283090360. The cubic root of 72162108 is about 416.3287511633.

The spelling of 72162108 in words is "seventy-two million, one hundred sixty-two thousand, one hundred eight".