72541624 has 16 divisors (see below), whose sum is σ = 136114920. Its totient is φ = 36244320.

The previous prime is 72541619. The next prime is 72541657. The reversal of 72541624 is 42614527.

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, 13119 + ... + 17809.

Almost surely, 2^72541624 is an apocalyptic number.

It is an amenable number.

72541624 is a deficient number, since it is larger than the sum of its proper divisors (63573296).

72541624 is a wasteful number, since it uses less digits than its factorization.

72541624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6630 (or 6626 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 72541624 is about 8517.1370776805. The cubic root of 72541624 is about 417.0573294615.

It can be divided in two parts, 72 and 541624, that added together give a square (541696 = 736²).

The spelling of 72541624 in words is "seventy-two million, five hundred forty-one thousand, six hundred twenty-four".