33690212 has 12 divisors (see below), whose sum is σ = 59114496. Its totient is φ = 16800360.

The previous prime is 33690197. The next prime is 33690221. The reversal of 33690212 is 21209633.

It is a super-2 number, since 2×33690212² = 2270060769209888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9464 + ... + 12527.

It is an arithmetic number, because the mean of its divisors is an integer number (4926208).

Almost surely, 2^33690212 is an apocalyptic number.

It is an amenable number.

33690212 is a deficient number, since it is larger than the sum of its proper divisors (25424284).

33690212 is a wasteful number, since it uses less digits than its factorization.

33690212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22378 (or 22376 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 33690212 is about 5804.3270066391. The cubic root of 33690212 is about 322.9742620560.

Adding to 33690212 its reverse (21209633), we get a palindrome (54899845).

The spelling of 33690212 in words is "thirty-three million, six hundred ninety thousand, two hundred twelve".