720045928 has 32 divisors (see below), whose sum is σ = 1592732160. Its totient is φ = 298635840.

The previous prime is 720045923. The next prime is 720045929. The reversal of 720045928 is 829540027.

720045928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×720045928² = 1036932276858762368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (720045923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205651 + ... + 209122.

It is an arithmetic number, because the mean of its divisors is an integer number (49772880).

Almost surely, 2^720045928 is an apocalyptic number.

It is an amenable number.

720045928 is an abundant number, since it is smaller than the sum of its proper divisors (872686232).

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

720045928 is a wasteful number, since it uses less digits than its factorization.

720045928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414817 (or 414813 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 720045928 is about 26833.6715341006. The cubic root of 720045928 is about 896.3000064949.

The spelling of 720045928 in words is "seven hundred twenty million, forty-five thousand, nine hundred twenty-eight".