72225168 has 20 divisors (see below), whose sum is σ = 186581808. Its totient is φ = 24075040.

The previous prime is 72225161. The next prime is 72225173. The reversal of 72225168 is 86152227.

It is not an unprimeable number, because it can be changed into a prime (72225161) 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, 752298 + ... + 752393.

Almost surely, 2^72225168 is an apocalyptic number.

It is an amenable number.

72225168 is an abundant number, since it is smaller than the sum of its proper divisors (114356640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72225168 is a wasteful number, since it uses less digits than its factorization.

72225168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504702 (or 1504696 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 72225168 is about 8498.5391685866. The cubic root of 72225168 is about 416.4499876778.

The spelling of 72225168 in words is "seventy-two million, two hundred twenty-five thousand, one hundred sixty-eight".