28993513996 has 6 divisors (see below), whose sum is σ = 50738649500. Its totient is φ = 14496756996.

The previous prime is 28993513979. The next prime is 28993514003. The reversal of 28993513996 is 69931539982.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3624189246 + ... + 3624189253.

Almost surely, 2^28993513996 is an apocalyptic number.

It is an amenable number.

28993513996 is a deficient number, since it is larger than the sum of its proper divisors (21745135504).

28993513996 is a wasteful number, since it uses less digits than its factorization.

28993513996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7248378503 (or 7248378501 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 64.

The spelling of 28993513996 in words is "twenty-eight billion, nine hundred ninety-three million, five hundred thirteen thousand, nine hundred ninety-six".