28290792 has 32 divisors (see below), whose sum is σ = 72640800. Its totient is φ = 9175104.

The previous prime is 28290767. The next prime is 28290797. The reversal of 28290792 is 29709282.

It is a self number, because there is not a number n which added to its sum of digits gives 28290792.

It is not an unprimeable number, because it can be changed into a prime (28290797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15042 + ... + 16817.

It is an arithmetic number, because the mean of its divisors is an integer number (2270025).

Almost surely, 2^28290792 is an apocalyptic number.

It is an amenable number.

28290792 is an abundant number, since it is smaller than the sum of its proper divisors (44350008).

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

28290792 is a wasteful number, since it uses less digits than its factorization.

28290792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31905 (or 31901 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 28290792 is about 5318.9089106696. The cubic root of 28290792 is about 304.7064882157.

The spelling of 28290792 in words is "twenty-eight million, two hundred ninety thousand, seven hundred ninety-two".