28598978938 has 16 divisors (see below), whose sum is σ = 43598520000. Its totient is φ = 14067754272.

The previous prime is 28598978921. The next prime is 28598978971. The reversal of 28598978938 is 83987989582.

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 7 ways as a sum of consecutive naturals, for example, 368268 + ... + 439111.

It is an arithmetic number, because the mean of its divisors is an integer number (2724907500).

Almost surely, 2^28598978938 is an apocalyptic number.

28598978938 is a deficient number, since it is larger than the sum of its proper divisors (14999541062).

28598978938 is a wasteful number, since it uses less digits than its factorization.

28598978938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807669.

The product of its digits is 627056640, while the sum is 76.

The spelling of 28598978938 in words is "twenty-eight billion, five hundred ninety-eight million, nine hundred seventy-eight thousand, nine hundred thirty-eight".