33228128 has 24 divisors (see below), whose sum is σ = 65794680. Its totient is φ = 16518400.

The previous prime is 33228127. The next prime is 33228179. The reversal of 33228128 is 82182233.

It is a super-2 number, since 2×33228128² = 2208216980768768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33228128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33228127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2828 + ... + 8628.

It is an arithmetic number, because the mean of its divisors is an integer number (2741445).

Almost surely, 2^33228128 is an apocalyptic number.

It is an amenable number.

33228128 is a deficient number, since it is larger than the sum of its proper divisors (32566552).

33228128 is a wasteful number, since it uses less digits than its factorization.

33228128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990 (or 5982 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 33228128 is about 5764.3844424188. The cubic root of 33228128 is about 321.4908559278.

The spelling of 33228128 in words is "thirty-three million, two hundred twenty-eight thousand, one hundred twenty-eight".