28475992028 has 48 divisors (see below), whose sum is σ = 56521006080. Its totient is φ = 12435897600.

The previous prime is 28475992019. The next prime is 28475992067. The reversal of 28475992028 is 82029957482.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114500 + ... + 264692.

It is an arithmetic number, because the mean of its divisors is an integer number (1177520960).

Almost surely, 2^28475992028 is an apocalyptic number.

It is an amenable number.

28475992028 is a deficient number, since it is larger than the sum of its proper divisors (28045014052).

28475992028 is a wasteful number, since it uses less digits than its factorization.

28475992028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150378 (or 150376 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 28475992028 in words is "twenty-eight billion, four hundred seventy-five million, nine hundred ninety-two thousand, twenty-eight".