72727832 has 16 divisors (see below), whose sum is σ = 137183760. Its totient is φ = 36145504.

The previous prime is 72727807. The next prime is 72727843. The reversal of 72727832 is 23872727.

It is an alternating number because its digits alternate between odd and even.

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, 25883 + ... + 28554.

It is an arithmetic number, because the mean of its divisors is an integer number (8573985).

Almost surely, 2^72727832 is an apocalyptic number.

It is an amenable number.

72727832 is a deficient number, since it is larger than the sum of its proper divisors (64455928).

72727832 is a wasteful number, since it uses less digits than its factorization.

72727832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54610 (or 54606 counting only the distinct ones).

The product of its digits is 65856, while the sum is 38.

The square root of 72727832 is about 8528.0614444316. The cubic root of 72727832 is about 417.4138744501.

The spelling of 72727832 in words is "seventy-two million, seven hundred twenty-seven thousand, eight hundred thirty-two".