28550879 has 12 divisors (see below), whose sum is σ = 33540624. Its totient is φ = 24230304.

The previous prime is 28550869. The next prime is 28550887. The reversal of 28550879 is 97805582.

It is not a de Polignac number, because 28550879 - 2²⁰ = 27502303 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 (28550849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2219 + ... + 7875.

It is an arithmetic number, because the mean of its divisors is an integer number (2795052).

Almost surely, 2^28550879 is an apocalyptic number.

28550879 is a deficient number, since it is larger than the sum of its proper divisors (4989745).

28550879 is a wasteful number, since it uses less digits than its factorization.

28550879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5774 (or 5767 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The square root of 28550879 is about 5343.3022560959. The cubic root of 28550879 is about 305.6373985405.

The spelling of 28550879 in words is "twenty-eight million, five hundred fifty thousand, eight hundred seventy-nine".