33213036 has 72 divisors (see below), whose sum is σ = 84206416. Its totient is φ = 10183680.

The previous prime is 33213017. The next prime is 33213049. The reversal of 33213036 is 63031233.

It is a super-2 number, since 2×33213036² = 2206211520674592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211470 + ... + 211626.

Almost surely, 2^33213036 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 33213036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42103208).

33213036 is an abundant number, since it is smaller than the sum of its proper divisors (50993380).

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

33213036 is a wasteful number, since it uses less digits than its factorization.

33213036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 33213036 is about 5763.0752207480. The cubic root of 33213036 is about 321.4421755371.

Adding to 33213036 its reverse (63031233), we get a palindrome (96244269).

The spelling of 33213036 in words is "thirty-three million, two hundred thirteen thousand, thirty-six".