28183875 has 32 divisors (see below), whose sum is σ = 49667904. Its totient is φ = 14144000.

The previous prime is 28183871. The next prime is 28183889. The reversal of 28183875 is 57838182.

It is a happy number.

It is not a de Polignac number, because 28183875 - 2² = 28183871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28183871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4165 + ... + 8585.

It is an arithmetic number, because the mean of its divisors is an integer number (1552122).

Almost surely, 2^28183875 is an apocalyptic number.

28183875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28183875 is a deficient number, since it is larger than the sum of its proper divisors (21484029).

28183875 is a wasteful number, since it uses less digits than its factorization.

28183875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456 (or 4446 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 28183875 is about 5308.8487452554. The cubic root of 28183875 is about 304.3221531509.

The spelling of 28183875 in words is "twenty-eight million, one hundred eighty-three thousand, eight hundred seventy-five".