28826890 has 16 divisors (see below), whose sum is σ = 51949800. Its totient is φ = 11517120.

The previous prime is 28826887. The next prime is 28826893. The reversal of 28826890 is 9862882.

It is an interprime number because it is at equal distance from previous prime (28826887) and next prime (28826893).

It can be written as a sum of positive squares in 4 ways, for example, as 10517049 + 18309841 = 3243^2 + 4279^2 .

It is not an unprimeable number, because it can be changed into a prime (28826893) 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, 14560 + ... + 16420.

Almost surely, 2^28826890 is an apocalyptic number.

28826890 is a deficient number, since it is larger than the sum of its proper divisors (23122910).

28826890 is a wasteful number, since it uses less digits than its factorization.

28826890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 28826890 is about 5369.0678893082. The cubic root of 28826890 is about 306.6191417111.

The spelling of 28826890 in words is "twenty-eight million, eight hundred twenty-six thousand, eight hundred ninety".