72318136 has 32 divisors (see below), whose sum is σ = 156628080. Its totient is φ = 30937600.

The previous prime is 72318097. The next prime is 72318151. The reversal of 72318136 is 63181327.

It is a junction number, because it is equal to n+sod(n) for n = 72318098 and 72318107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22675 + ... + 25666.

Almost surely, 2^72318136 is an apocalyptic number.

It is an amenable number.

72318136 is an abundant number, since it is smaller than the sum of its proper divisors (84309944).

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

72318136 is a wasteful number, since it uses less digits than its factorization.

72318136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48375 (or 48371 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 72318136 is about 8504.0070555004. The cubic root of 72318136 is about 416.6285954193.

The spelling of 72318136 in words is "seventy-two million, three hundred eighteen thousand, one hundred thirty-six".