72444904 has 16 divisors (see below), whose sum is σ = 155239200. Its totient is φ = 31047792.

The previous prime is 72444901. The next prime is 72444913. The reversal of 72444904 is 40944427.

It is a self number, because there is not a number n which added to its sum of digits gives 72444904.

It is not an unprimeable number, because it can be changed into a prime (72444901) 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, 646774 + ... + 646885.

It is an arithmetic number, because the mean of its divisors is an integer number (9702450).

Almost surely, 2^72444904 is an apocalyptic number.

It is an amenable number.

72444904 is an abundant number, since it is smaller than the sum of its proper divisors (82794296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72444904 is a wasteful number, since it uses less digits than its factorization.

72444904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293672 (or 1293668 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 72444904 is about 8511.4572195365. The cubic root of 72444904 is about 416.8718923590.

The spelling of 72444904 in words is "seventy-two million, four hundred forty-four thousand, nine hundred four".