720385902 has 24 divisors (see below), whose sum is σ = 1561452984. Its totient is φ = 240033744.

The previous prime is 720385901. The next prime is 720385957. The reversal of 720385902 is 209583027.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720385901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50608 + ... + 63260.

It is an arithmetic number, because the mean of its divisors is an integer number (65060541).

Almost surely, 2^720385902 is an apocalyptic number.

720385902 is an abundant number, since it is smaller than the sum of its proper divisors (841067082).

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

720385902 is a wasteful number, since it uses less digits than its factorization.

720385902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15824 (or 15821 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 720385902 is about 26840.0056259309. The cubic root of 720385902 is about 896.4410487723.

The spelling of 720385902 in words is "seven hundred twenty million, three hundred eighty-five thousand, nine hundred two".