28877255 has 24 divisors (see below), whose sum is σ = 38782800. Its totient is φ = 20620160.

The previous prime is 28877231. The next prime is 28877257. The reversal of 28877255 is 55277882.

It is not a de Polignac number, because 28877255 - 2²⁰ = 27828679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28877257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35291 + ... + 36099.

It is an arithmetic number, because the mean of its divisors is an integer number (1615950).

Almost surely, 2^28877255 is an apocalyptic number.

28877255 is a deficient number, since it is larger than the sum of its proper divisors (9905545).

28877255 is a wasteful number, since it uses less digits than its factorization.

28877255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 884 counting only the distinct ones).

The product of its digits is 313600, while the sum is 44.

The square root of 28877255 is about 5373.7561351442. The cubic root of 28877255 is about 306.7976080447.

The spelling of 28877255 in words is "twenty-eight million, eight hundred seventy-seven thousand, two hundred fifty-five".