28589877 has 12 divisors (see below), whose sum is σ = 41723500. Its totient is φ = 18862848.

The previous prime is 28589849. The next prime is 28589879. The reversal of 28589877 is 77898582.

It can be written as a sum of positive squares in 2 ways, for example, as 9979281 + 18610596 = 3159^2 + 4314^2 .

It is not a de Polignac number, because 28589877 - 2⁷ = 28589749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28589879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15502 + ... + 17247.

Almost surely, 2^28589877 is an apocalyptic number.

It is an amenable number.

28589877 is a deficient number, since it is larger than the sum of its proper divisors (13133623).

28589877 is a wasteful number, since it uses less digits than its factorization.

28589877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32852 (or 32849 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The square root of 28589877 is about 5346.9502522466. The cubic root of 28589877 is about 305.7764932014.

The spelling of 28589877 in words is "twenty-eight million, five hundred eighty-nine thousand, eight hundred seventy-seven".