72245618 has 16 divisors (see below), whose sum is σ = 111728160. Its totient is φ = 35019936.

The previous prime is 72245549. The next prime is 72245623. The reversal of 72245618 is 81654227.

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, 4421 + ... + 12807.

It is an arithmetic number, because the mean of its divisors is an integer number (6983010).

Almost surely, 2^72245618 is an apocalyptic number.

72245618 is a deficient number, since it is larger than the sum of its proper divisors (39482542).

72245618 is a wasteful number, since it uses less digits than its factorization.

72245618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8521.

The product of its digits is 26880, while the sum is 35.

The square root of 72245618 is about 8499.7422313856. The cubic root of 72245618 is about 416.4892888375.

The spelling of 72245618 in words is "seventy-two million, two hundred forty-five thousand, six hundred eighteen".