28750685964 has 96 divisors (see below), whose sum is σ = 90072116736. Its totient is φ = 6893268480.

The previous prime is 28750685959. The next prime is 28750685983. The reversal of 28750685964 is 46958605782.

It is a junction number, because it is equal to n+sod(n) for n = 28750685898 and 28750685907.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1184737 + ... + 1208760.

It is an arithmetic number, because the mean of its divisors is an integer number (938251216).

Almost surely, 2^28750685964 is an apocalyptic number.

It is an amenable number.

28750685964 is an abundant number, since it is smaller than the sum of its proper divisors (61321430772).

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

28750685964 is a wasteful number, since it uses less digits than its factorization.

28750685964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393535 (or 2393533 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 28750685964 in words is "twenty-eight billion, seven hundred fifty million, six hundred eighty-five thousand, nine hundred sixty-four".