28183275 has 48 divisors (see below), whose sum is σ = 53032320. Its totient is φ = 14666400.

The previous prime is 28183271. The next prime is 28183279. The reversal of 28183275 is 57238182.

It is an interprime number because it is at equal distance from previous prime (28183271) and next prime (28183279).

It is not a de Polignac number, because 28183275 - 2² = 28183271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28183271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28540 + ... + 29510.

It is an arithmetic number, because the mean of its divisors is an integer number (1104840).

Almost surely, 2^28183275 is an apocalyptic number.

28183275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28183275 is a deficient number, since it is larger than the sum of its proper divisors (24849045).

28183275 is a wasteful number, since it uses less digits than its factorization.

28183275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1022 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 28183275 is about 5308.7922355278. The cubic root of 28183275 is about 304.3199935876.

The spelling of 28183275 in words is "twenty-eight million, one hundred eighty-three thousand, two hundred seventy-five".