720402928 has 40 divisors (see below), whose sum is σ = 1607770112. Its totient is φ = 306307008.

The previous prime is 720402877. The next prime is 720402959. The reversal of 720402928 is 829204027.

It is a junction number, because it is equal to n+sod(n) for n = 720402893 and 720402902.

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, 11100 + ... + 39547.

Almost surely, 2^720402928 is an apocalyptic number.

It is an amenable number.

720402928 is an abundant number, since it is smaller than the sum of its proper divisors (887367184).

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

720402928 is a wasteful number, since it uses less digits than its factorization.

720402928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50789 (or 50783 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 720402928 is about 26840.3227998472. The cubic root of 720402928 is about 896.4481110450.

The spelling of 720402928 in words is "seven hundred twenty million, four hundred two thousand, nine hundred twenty-eight".