33204213 has 72 divisors (see below), whose sum is σ = 61034688. Its totient is φ = 17273088.

The previous prime is 33204187. The next prime is 33204251. The reversal of 33204213 is 31240233.

It is not a de Polignac number, because 33204213 - 2¹⁰ = 33203189 is a prime.

It is a super-2 number, since 2×33204213² = 2205039521898738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33204263) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 322320 + ... + 322422.

It is an arithmetic number, because the mean of its divisors is an integer number (847704).

Almost surely, 2^33204213 is an apocalyptic number.

It is an amenable number.

33204213 is a deficient number, since it is larger than the sum of its proper divisors (27830475).

33204213 is a wasteful number, since it uses less digits than its factorization.

33204213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 33204213 is about 5762.3096931699. The cubic root of 33204213 is about 321.4137094504.

Adding to 33204213 its reverse (31240233), we get a palindrome (64444446).

The spelling of 33204213 in words is "thirty-three million, two hundred four thousand, two hundred thirteen".