720364728 has 32 divisors (see below), whose sum is σ = 1802077200. Its totient is φ = 239966208.

The previous prime is 720364709. The next prime is 720364753. The reversal of 720364728 is 827463027.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31768 + ... + 49496.

Almost surely, 2^720364728 is an apocalyptic number.

It is an amenable number.

720364728 is an abundant number, since it is smaller than the sum of its proper divisors (1081712472).

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

720364728 is a wasteful number, since it uses less digits than its factorization.

720364728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19431 (or 19427 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 720364728 is about 26839.6111745308. The cubic root of 720364728 is about 896.4322657813.

The spelling of 720364728 in words is "seven hundred twenty million, three hundred sixty-four thousand, seven hundred twenty-eight".