72164502 has 12 divisors (see below), whose sum is σ = 156356460. Its totient is φ = 24054828.

The previous prime is 72164483. The next prime is 72164503. The reversal of 72164502 is 20546127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72164503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2004552 + ... + 2004587.

It is an arithmetic number, because the mean of its divisors is an integer number (13029705).

Almost surely, 2^72164502 is an apocalyptic number.

72164502 is an abundant number, since it is smaller than the sum of its proper divisors (84191958).

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

72164502 is a wasteful number, since it uses less digits than its factorization.

72164502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4009147 (or 4009144 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 72164502 is about 8494.9692171308. The cubic root of 72164502 is about 416.3333550570. Note that the first 4 decimals are identical.

The spelling of 72164502 in words is "seventy-two million, one hundred sixty-four thousand, five hundred two".