28089579 has 16 divisors (see below), whose sum is σ = 42952448. Its totient is φ = 15995232.

The previous prime is 28089569. The next prime is 28089613. The reversal of 28089579 is 97598082.

It is a happy number.

It is not a de Polignac number, because 28089579 - 2⁵ = 28089547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28089539) 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, 4269 + ... + 8625.

It is an arithmetic number, because the mean of its divisors is an integer number (2684528).

Almost surely, 2^28089579 is an apocalyptic number.

28089579 is a deficient number, since it is larger than the sum of its proper divisors (14862869).

28089579 is a wasteful number, since it uses less digits than its factorization.

28089579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 28089579 is about 5299.9602828701. The cubic root of 28089579 is about 303.9823793746.

The spelling of 28089579 in words is "twenty-eight million, eighty-nine thousand, five hundred seventy-nine".