72456044 has 24 divisors (see below), whose sum is σ = 135668400. Its totient is φ = 33756480.

The previous prime is 72456037. The next prime is 72456047. The reversal of 72456044 is 44065427.

It is a self number, because there is not a number n which added to its sum of digits gives 72456044.

It is not an unprimeable number, because it can be changed into a prime (72456047) 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 7 ways as a sum of consecutive naturals, for example, 3179 + ... + 12450.

It is an arithmetic number, because the mean of its divisors is an integer number (5652850).

Almost surely, 2^72456044 is an apocalyptic number.

It is an amenable number.

72456044 is a deficient number, since it is larger than the sum of its proper divisors (63212356).

72456044 is a wasteful number, since it uses less digits than its factorization.

72456044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15713 (or 15711 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 72456044 is about 8512.1116064112. Note that the first 3 decimals coincide. The cubic root of 72456044 is about 416.8932590096.

The spelling of 72456044 in words is "seventy-two million, four hundred fifty-six thousand, forty-four".