720434224 has 20 divisors (see below), whose sum is σ = 1399441680. Its totient is φ = 359288000.

The previous prime is 720434201. The next prime is 720434233. The reversal of 720434224 is 422434027.

It is a super-2 number, since 2×720434224² = 1038050942220964352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 720434192 and 720434201.

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, 51652 + ... + 64099.

It is an arithmetic number, because the mean of its divisors is an integer number (69972084).

Almost surely, 2^720434224 is an apocalyptic number.

It is an amenable number.

720434224 is a deficient number, since it is larger than the sum of its proper divisors (679007456).

720434224 is a wasteful number, since it uses less digits than its factorization.

720434224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116148 (or 116142 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 720434224 is about 26840.9057969361. The cubic root of 720434224 is about 896.4610921295.

It can be divided in two parts, 72043 and 4224, that added together give a palindrome (76267).

The spelling of 720434224 in words is "seven hundred twenty million, four hundred thirty-four thousand, two hundred twenty-four".