729572224 has 32 divisors (see below), whose sum is σ = 1467055800. Its totient is φ = 361370112.

The previous prime is 729572209. The next prime is 729572243. The reversal of 729572224 is 422275927.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12939 + ... + 40330.

Almost surely, 2^729572224 is an apocalyptic number.

It is an amenable number.

729572224 is an abundant number, since it is smaller than the sum of its proper divisors (737483576).

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

729572224 is a wasteful number, since it uses less digits than its factorization.

729572224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53390 (or 53378 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 729572224 is about 27010.5946620951. The cubic root of 729572224 is about 900.2354215408.

The spelling of 729572224 in words is "seven hundred twenty-nine million, five hundred seventy-two thousand, two hundred twenty-four".