72222956 has 24 divisors (see below), whose sum is σ = 136655904. Its totient is φ = 33200640.

The previous prime is 72222949. The next prime is 72222977. The reversal of 72222956 is 65922227.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11036 + ... + 16316.

It is an arithmetic number, because the mean of its divisors is an integer number (5693996).

Almost surely, 2^72222956 is an apocalyptic number.

It is an amenable number.

72222956 is a deficient number, since it is larger than the sum of its proper divisors (64432948).

72222956 is a wasteful number, since it uses less digits than its factorization.

72222956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561 (or 5559 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 72222956 is about 8498.4090275769. The cubic root of 72222956 is about 416.4457361738.

The spelling of 72222956 in words is "seventy-two million, two hundred twenty-two thousand, nine hundred fifty-six".