33240216 has 16 divisors (see below), whose sum is σ = 83100600. Its totient is φ = 11080064.

The previous prime is 33240203. The next prime is 33240223. The reversal of 33240216 is 61204233.

It is a happy number.

It is a super-2 number, since 2×33240216² = 2209823919453312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33240192 and 33240201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692481 + ... + 692528.

Almost surely, 2^33240216 is an apocalyptic number.

It is an amenable number.

33240216 is an abundant number, since it is smaller than the sum of its proper divisors (49860384).

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

33240216 is a wasteful number, since it uses less digits than its factorization.

33240216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385018 (or 1385014 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 33240216 is about 5765.4328545219. The cubic root of 33240216 is about 321.5298360584.

Adding to 33240216 its reverse (61204233), we get a palindrome (94444449).

The spelling of 33240216 in words is "thirty-three million, two hundred forty thousand, two hundred sixteen".