28918012492 has 12 divisors (see below), whose sum is σ = 50614414200. Its totient is φ = 14456751296.

The previous prime is 28918012451. The next prime is 28918012507. The reversal of 28918012492 is 29421081982.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534718 + ... + 586309.

It is an arithmetic number, because the mean of its divisors is an integer number (4217867850).

Almost surely, 2^28918012492 is an apocalyptic number.

It is an amenable number.

28918012492 is a deficient number, since it is larger than the sum of its proper divisors (21696401708).

28918012492 is a wasteful number, since it uses less digits than its factorization.

28918012492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127480 (or 1127478 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The spelling of 28918012492 in words is "twenty-eight billion, nine hundred eighteen million, twelve thousand, four hundred ninety-two".