72164336 has 20 divisors (see below), whose sum is σ = 140052792. Its totient is φ = 36021696.

The previous prime is 72164333. The next prime is 72164359. The reversal of 72164336 is 63346127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72164333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6995 + ... + 13901.

Almost surely, 2^72164336 is an apocalyptic number.

It is an amenable number.

72164336 is a deficient number, since it is larger than the sum of its proper divisors (67888456).

72164336 is a wasteful number, since it uses less digits than its factorization.

72164336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568 (or 7562 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 72164336 is about 8494.9594466366. The cubic root of 72164336 is about 416.3330358262. Note that the first 3 decimals are identical.

The spelling of 72164336 in words is "seventy-two million, one hundred sixty-four thousand, three hundred thirty-six".