33297216 has 56 divisors (see below), whose sum is σ = 89574624. Its totient is φ = 10913280.

The previous prime is 33297167. The next prime is 33297247. The reversal of 33297216 is 61279233.

It is a happy number.

It is a super-2 number, since 2×33297216² = 2217409186701312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10291 + ... + 13133.

Almost surely, 2^33297216 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 33297216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44787312).

33297216 is an abundant number, since it is smaller than the sum of its proper divisors (56277408).

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

33297216 is a wasteful number, since it uses less digits than its factorization.

33297216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919 (or 2909 counting only the distinct ones).

The product of its digits is 13608, while the sum is 33.

The square root of 33297216 is about 5770.3739913458. The cubic root of 33297216 is about 321.7135165220.

The spelling of 33297216 in words is "thirty-three million, two hundred ninety-seven thousand, two hundred sixteen".