28580275 has 12 divisors (see below), whose sum is σ = 37305400. Its totient is φ = 21660480.

The previous prime is 28580231. The next prime is 28580297. The reversal of 28580275 is 57208582.

It is not a de Polignac number, because 28580275 - 2⁹ = 28579763 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 29610 + ... + 30559.

Almost surely, 2^28580275 is an apocalyptic number.

28580275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28580275 is a deficient number, since it is larger than the sum of its proper divisors (8725125).

28580275 is a wasteful number, since it uses less digits than its factorization.

28580275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60198 (or 60193 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 28580275 is about 5346.0522818244. The cubic root of 28580275 is about 305.7422573698.

The spelling of 28580275 in words is "twenty-eight million, five hundred eighty thousand, two hundred seventy-five".