28875255 has 8 divisors (see below), whose sum is σ = 46200432. Its totient is φ = 15400128.

The previous prime is 28875247. The next prime is 28875289. The reversal of 28875255 is 55257882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28875255 - 2³ = 28875247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962494 + ... + 962523.

It is an arithmetic number, because the mean of its divisors is an integer number (5775054).

Almost surely, 2^28875255 is an apocalyptic number.

28875255 is a deficient number, since it is larger than the sum of its proper divisors (17325177).

28875255 is a wasteful number, since it uses less digits than its factorization.

28875255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925025.

The product of its digits is 224000, while the sum is 42.

The square root of 28875255 is about 5373.5700423461. The cubic root of 28875255 is about 306.7905250841.

The spelling of 28875255 in words is "twenty-eight million, eight hundred seventy-five thousand, two hundred fifty-five".