72390418 has 16 divisors (see below), whose sum is σ = 116010720. Its totient is φ = 33777216.

The previous prime is 72390397. The next prime is 72390427. The reversal of 72390418 is 81409327.

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, 11671 + ... + 16762.

It is an arithmetic number, because the mean of its divisors is an integer number (7250670).

Almost surely, 2^72390418 is an apocalyptic number.

72390418 is a deficient number, since it is larger than the sum of its proper divisors (43620302).

72390418 is a wasteful number, since it uses less digits than its factorization.

72390418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28521.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 72390418 is about 8508.2558729742. The cubic root of 72390418 is about 416.7673560038.

The spelling of 72390418 in words is "seventy-two million, three hundred ninety thousand, four hundred eighteen".