72149684 has 12 divisors (see below), whose sum is σ = 128402400. Its totient is φ = 35463288.

The previous prime is 72149663. The next prime is 72149711. The reversal of 72149684 is 48694127.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152624 + ... + 153095.

It is an arithmetic number, because the mean of its divisors is an integer number (10700200).

Almost surely, 2^72149684 is an apocalyptic number.

It is an amenable number.

72149684 is a deficient number, since it is larger than the sum of its proper divisors (56252716).

72149684 is a wasteful number, since it uses less digits than its factorization.

72149684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305782 (or 305780 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 72149684 is about 8494.0970090999. The cubic root of 72149684 is about 416.3048569737.

It can be divided in two parts, 721 and 49684, that added together give a palindrome (50405).

The spelling of 72149684 in words is "seventy-two million, one hundred forty-nine thousand, six hundred eighty-four".