28033227 has 24 divisors (see below), whose sum is σ = 44101200. Its totient is φ = 17091648.

The previous prime is 28033211. The next prime is 28033277. The reversal of 28033227 is 72233082.

It is not a de Polignac number, because 28033227 - 2⁴ = 28033211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28033227.

It is not an unprimeable number, because it can be changed into a prime (28033277) 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, 2133 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (1837550).

Almost surely, 2^28033227 is an apocalyptic number.

28033227 is a deficient number, since it is larger than the sum of its proper divisors (16067973).

28033227 is a wasteful number, since it uses less digits than its factorization.

28033227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5707 (or 5704 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 28033227 is about 5294.6413476269. The cubic root of 28033227 is about 303.7789648749.

The spelling of 28033227 in words is "twenty-eight million, thirty-three thousand, two hundred twenty-seven".