72445404 has 24 divisors (see below), whose sum is σ = 177936640. Its totient is φ = 22877424.

The previous prime is 72445391. The next prime is 72445409. The reversal of 72445404 is 40454427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72445409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158644 + ... + 159099.

Almost surely, 2^72445404 is an apocalyptic number.

It is an amenable number.

72445404 is an abundant number, since it is smaller than the sum of its proper divisors (105491236).

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

72445404 is a wasteful number, since it uses less digits than its factorization.

72445404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317769 (or 317767 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 72445404 is about 8511.4865916595. The cubic root of 72445404 is about 416.8728514118.

The spelling of 72445404 in words is "seventy-two million, four hundred forty-five thousand, four hundred four".