28826889 has 32 divisors (see below), whose sum is σ = 49373184. Its totient is φ = 14541120.

The previous prime is 28826887. The next prime is 28826893. The reversal of 28826889 is 98862882.

It is not a de Polignac number, because 28826889 - 2¹ = 28826887 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28826887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3984 + ... + 8574.

It is an arithmetic number, because the mean of its divisors is an integer number (1542912).

Almost surely, 2^28826889 is an apocalyptic number.

It is an amenable number.

28826889 is a deficient number, since it is larger than the sum of its proper divisors (20546295).

28826889 is a wasteful number, since it uses less digits than its factorization.

28826889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637.

The product of its digits is 884736, while the sum is 51.

The square root of 28826889 is about 5369.0677961821. The cubic root of 28826889 is about 306.6191381656.

The spelling of 28826889 in words is "twenty-eight million, eight hundred twenty-six thousand, eight hundred eighty-nine".