616750728 has 32 divisors (see below), whose sum is σ = 1682048160. Its totient is φ = 186894080.

The previous prime is 616750711. The next prime is 616750747. The reversal of 616750728 is 827057616.

It is a self number, because there is not a number n which added to its sum of digits gives 616750728.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167825 + ... + 1168352.

It is an arithmetic number, because the mean of its divisors is an integer number (52564005).

Almost surely, 2^616750728 is an apocalyptic number.

It is an amenable number.

616750728 is an abundant number, since it is smaller than the sum of its proper divisors (1065297432).

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

616750728 is a wasteful number, since it uses less digits than its factorization.

616750728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336197 (or 2336193 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 616750728 is about 24834.4665334289. The cubic root of 616750728 is about 851.2096861414.

The spelling of 616750728 in words is "six hundred sixteen million, seven hundred fifty thousand, seven hundred twenty-eight".