28183233 has 16 divisors (see below), whose sum is σ = 41564096. Its totient is φ = 16873920.

The previous prime is 28183193. The next prime is 28183241. The reversal of 28183233 is 33238182.

It is a de Polignac number, because none of the positive numbers 2^k-28183233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28183233.

It is not an unprimeable number, because it can be changed into a prime (28183633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8323 + ... + 11208.

It is an arithmetic number, because the mean of its divisors is an integer number (2597756).

Almost surely, 2^28183233 is an apocalyptic number.

It is an amenable number.

28183233 is a deficient number, since it is larger than the sum of its proper divisors (13380863).

28183233 is a wasteful number, since it uses less digits than its factorization.

28183233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19584.

The product of its digits is 6912, while the sum is 30.

The square root of 28183233 is about 5308.7882798243. The cubic root of 28183233 is about 304.3198424170.

The spelling of 28183233 in words is "twenty-eight million, one hundred eighty-three thousand, two hundred thirty-three".