28828090 has 32 divisors (see below), whose sum is σ = 55785024. Its totient is φ = 10686720.

The previous prime is 28828087. The next prime is 28828097. The reversal of 28828090 is 9082882.

It is not an unprimeable number, because it can be changed into a prime (28828097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10125 + ... + 12655.

It is an arithmetic number, because the mean of its divisors is an integer number (1743282).

Almost surely, 2^28828090 is an apocalyptic number.

28828090 is a deficient number, since it is larger than the sum of its proper divisors (26956934).

28828090 is a wasteful number, since it uses less digits than its factorization.

28828090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 28828090 is about 5369.1796393863. The cubic root of 28828090 is about 306.6233962788.

The spelling of 28828090 in words is "twenty-eight million, eight hundred twenty-eight thousand, ninety".