72390908 has 12 divisors (see below), whose sum is σ = 127462440. Its totient is φ = 35973072.

The previous prime is 72390883. The next prime is 72390911. The reversal of 72390908 is 80909327.

It is a super-2 number, since 2×72390908² = 10480887122128928, which contains 22 as substring.

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, 54863 + ... + 56166.

It is an arithmetic number, because the mean of its divisors is an integer number (10621870).

Almost surely, 2^72390908 is an apocalyptic number.

It is an amenable number.

72390908 is a deficient number, since it is larger than the sum of its proper divisors (55071532).

72390908 is a wasteful number, since it uses less digits than its factorization.

72390908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111196 (or 111194 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 72390908 is about 8508.2846684864. The cubic root of 72390908 is about 416.7682963471.

The spelling of 72390908 in words is "seventy-two million, three hundred ninety thousand, nine hundred eight".