28810028 has 24 divisors (see below), whose sum is σ = 54787488. Its totient is φ = 13176576.

The previous prime is 28809997. The next prime is 28810049. The reversal of 28810028 is 82001882.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

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, 3425 + ... + 8327.

It is an arithmetic number, because the mean of its divisors is an integer number (2282812).

Almost surely, 2^28810028 is an apocalyptic number.

It is an amenable number.

28810028 is a deficient number, since it is larger than the sum of its proper divisors (25977460).

28810028 is a wasteful number, since it uses less digits than its factorization.

28810028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5033 (or 5031 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 28810028 is about 5367.4973684204. The cubic root of 28810028 is about 306.5593454540.

The spelling of 28810028 in words is "twenty-eight million, eight hundred ten thousand, twenty-eight".