33209228 has 24 divisors (see below), whose sum is σ = 66269952. Its totient is φ = 14425344.

The previous prime is 33209227. The next prime is 33209243. The reversal of 33209228 is 82290233.

It is a super-2 number, since 2×33209228² = 2205705648711968, 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 33209228.

It is not an unprimeable number, because it can be changed into a prime (33209227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17900 + ... + 19667.

It is an arithmetic number, because the mean of its divisors is an integer number (2761248).

Almost surely, 2^33209228 is an apocalyptic number.

It is an amenable number.

33209228 is a deficient number, since it is larger than the sum of its proper divisors (33060724).

33209228 is a wasteful number, since it uses less digits than its factorization.

33209228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37601 (or 37599 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 33209228 is about 5762.7448321091. The cubic root of 33209228 is about 321.4298902145.

The spelling of 33209228 in words is "thirty-three million, two hundred nine thousand, two hundred twenty-eight".