72564446 has 8 divisors (see below), whose sum is σ = 108972864. Its totient is φ = 36240160.

The previous prime is 72564433. The next prime is 72564469. The reversal of 72564446 is 64446527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18830 + ... + 22353.

It is an arithmetic number, because the mean of its divisors is an integer number (13621608).

Almost surely, 2^72564446 is an apocalyptic number.

72564446 is a deficient number, since it is larger than the sum of its proper divisors (36408418).

72564446 is a wasteful number, since it uses less digits than its factorization.

72564446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42066.

The product of its digits is 161280, while the sum is 38.

The square root of 72564446 is about 8518.4767417655. The cubic root of 72564446 is about 417.1010610640.

The spelling of 72564446 in words is "seventy-two million, five hundred sixty-four thousand, four hundred forty-six".