72640582 has 16 divisors (see below), whose sum is σ = 124680960. Its totient is φ = 31093128.

The previous prime is 72640573. The next prime is 72640637. The reversal of 72640582 is 28504627.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10519 + ... + 15997.

It is an arithmetic number, because the mean of its divisors is an integer number (7792560).

Almost surely, 2^72640582 is an apocalyptic number.

72640582 is a deficient number, since it is larger than the sum of its proper divisors (52040378).

72640582 is a wasteful number, since it uses less digits than its factorization.

72640582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 72640582 is about 8522.9444442634. The cubic root of 72640582 is about 417.2468868696.

The spelling of 72640582 in words is "seventy-two million, six hundred forty thousand, five hundred eighty-two".