28993630704 has 40 divisors (see below), whose sum is σ = 75139549392. Its totient is φ = 9633661440.

The previous prime is 28993630691. The next prime is 28993630711. The reversal of 28993630704 is 40703639982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949887 + ... + 979934.

Almost surely, 2^28993630704 is an apocalyptic number.

28993630704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28993630704 is an abundant number, since it is smaller than the sum of its proper divisors (46145918688).

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

28993630704 is a wasteful number, since it uses less digits than its factorization.

28993630704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930145 (or 1930139 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 28993630704 in words is "twenty-eight billion, nine hundred ninety-three million, six hundred thirty thousand, seven hundred four".