72312386 has 8 divisors (see below), whose sum is σ = 109521984. Its totient is φ = 35805060.

The previous prime is 72312379. The next prime is 72312521. The reversal of 72312386 is 68321327.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 175310 + ... + 175721.

It is an arithmetic number, because the mean of its divisors is an integer number (13690248).

Almost surely, 2^72312386 is an apocalyptic number.

72312386 is a deficient number, since it is larger than the sum of its proper divisors (37209598).

72312386 is a wasteful number, since it uses less digits than its factorization.

72312386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351136.

The product of its digits is 12096, while the sum is 32.

The square root of 72312386 is about 8503.6689728611. The cubic root of 72312386 is about 416.6175531089.

The spelling of 72312386 in words is "seventy-two million, three hundred twelve thousand, three hundred eighty-six".