72724790 has 16 divisors (see below), whose sum is σ = 132699168. Its totient is φ = 28691136.

The previous prime is 72724783. The next prime is 72724801. The reversal of 72724790 is 9742727.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 49082 + ... + 50541.

It is an arithmetic number, because the mean of its divisors is an integer number (8293698).

Almost surely, 2^72724790 is an apocalyptic number.

72724790 is a deficient number, since it is larger than the sum of its proper divisors (59974378).

72724790 is a wasteful number, since it uses less digits than its factorization.

72724790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99703.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 72724790 is about 8527.8830901930. The cubic root of 72724790 is about 417.4080546207.

The spelling of 72724790 in words is "seventy-two million, seven hundred twenty-four thousand, seven hundred ninety".