72538684 has 12 divisors (see below), whose sum is σ = 127582000. Its totient is φ = 36086688.

The previous prime is 72538681. The next prime is 72538693. The reversal of 72538684 is 48683527.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 72538684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72538681) by changing a digit.

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, 44769 + ... + 46360.

Almost surely, 2^72538684 is an apocalyptic number.

It is an amenable number.

72538684 is a deficient number, since it is larger than the sum of its proper divisors (55043316).

72538684 is a wasteful number, since it uses less digits than its factorization.

72538684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91332 (or 91330 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 72538684 is about 8516.9644827251. The cubic root of 72538684 is about 417.0516951555.

It can be divided in two parts, 72 and 538684, that added together give a square (538756 = 734²).

The spelling of 72538684 in words is "seventy-two million, five hundred thirty-eight thousand, six hundred eighty-four".