72225234 has 24 divisors (see below), whose sum is σ = 157619280. Its totient is φ = 23901048.

The previous prime is 72225211. The next prime is 72225239. The reversal of 72225234 is 43252227.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72225198 and 72225207.

It is not an unprimeable number, because it can be changed into a prime (72225239) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11932 + ... + 16935.

It is an arithmetic number, because the mean of its divisors is an integer number (6567470).

Almost surely, 2^72225234 is an apocalyptic number.

72225234 is an abundant number, since it is smaller than the sum of its proper divisors (85394046).

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

72225234 is a wasteful number, since it uses less digits than its factorization.

72225234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29014 (or 29011 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 72225234 is about 8498.5430516060. The cubic root of 72225234 is about 416.4501145297.

The spelling of 72225234 in words is "seventy-two million, two hundred twenty-five thousand, two hundred thirty-four".