28475292 has 12 divisors (see below), whose sum is σ = 66442376. Its totient is φ = 9491760.

The previous prime is 28475287. The next prime is 28475327. The reversal of 28475292 is 29257482.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 28475292.

It is a congruent 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, 1186459 + ... + 1186482.

Almost surely, 2^28475292 is an apocalyptic number.

It is an amenable number.

28475292 is an abundant number, since it is smaller than the sum of its proper divisors (37967084).

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

28475292 is a wasteful number, since it uses less digits than its factorization.

28475292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372948 (or 2372946 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 28475292 is about 5336.2245080206. The cubic root of 28475292 is about 305.3674403441.

The spelling of 28475292 in words is "twenty-eight million, four hundred seventy-five thousand, two hundred ninety-two".