28806790 has 16 divisors (see below), whose sum is σ = 51997968. Its totient is φ = 11490336.

The previous prime is 28806779. The next prime is 28806821. The reversal of 28806790 is 9760882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132 + ... + 7591.

It is an arithmetic number, because the mean of its divisors is an integer number (3249873).

Almost surely, 2^28806790 is an apocalyptic number.

28806790 is a deficient number, since it is larger than the sum of its proper divisors (23191178).

28806790 is a wasteful number, since it uses less digits than its factorization.

28806790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8103.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 28806790 is about 5367.1957296152. The cubic root of 28806790 is about 306.5478601435.

The spelling of 28806790 in words is "twenty-eight million, eight hundred six thousand, seven hundred ninety".