72237224 has 16 divisors (see below), whose sum is σ = 137077920. Its totient is φ = 35683120.

The previous prime is 72237169. The next prime is 72237229. The reversal of 72237224 is 42273227.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72237229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53732 + ... + 55059.

It is an arithmetic number, because the mean of its divisors is an integer number (8567370).

Almost surely, 2^72237224 is an apocalyptic number.

It is an amenable number.

72237224 is a deficient number, since it is larger than the sum of its proper divisors (64840696).

72237224 is a wasteful number, since it uses less digits than its factorization.

72237224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108880 (or 108876 counting only the distinct ones).

The product of its digits is 9408, while the sum is 29.

The square root of 72237224 is about 8499.2484373620. The cubic root of 72237224 is about 416.4731580022.

The spelling of 72237224 in words is "seventy-two million, two hundred thirty-seven thousand, two hundred twenty-four".