28789630028 has 36 divisors (see below), whose sum is σ = 51453006696. Its totient is φ = 14094806400.

The previous prime is 28789630007. The next prime is 28789630069. The reversal of 28789630028 is 82003698782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3374408 + ... + 3382928.

It is an arithmetic number, because the mean of its divisors is an integer number (1429250186).

Almost surely, 2^28789630028 is an apocalyptic number.

It is an amenable number.

28789630028 is a deficient number, since it is larger than the sum of its proper divisors (22663376668).

28789630028 is a wasteful number, since it uses less digits than its factorization.

28789630028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8874 (or 8811 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 28789630028 in words is "twenty-eight billion, seven hundred eighty-nine million, six hundred thirty thousand, twenty-eight".