33205216 has 96 divisors (see below), whose sum is σ = 78382080. Its totient is φ = 13670400.

The previous prime is 33205213. The next prime is 33205241. The reversal of 33205216 is 61250233.

It is a super-2 number, since 2×33205216² = 2205172739213312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33205213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185415 + ... + 185593.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^33205216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33205216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39191040).

33205216 is an abundant number, since it is smaller than the sum of its proper divisors (45176864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33205216 is a wasteful number, since it uses less digits than its factorization.

33205216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 33205216 is about 5762.3967235865. The cubic root of 33205216 is about 321.4169457335.

Adding to 33205216 its reverse (61250233), we get a palindrome (94455449).

The spelling of 33205216 in words is "thirty-three million, two hundred five thousand, two hundred sixteen".