33399012 has 24 divisors (see below), whose sum is σ = 80038336. Its totient is φ = 10831968.

The previous prime is 33399007. The next prime is 33399019. The reversal of 33399012 is 21099333.

It is a super-2 number, since 2×33399012² = 2230988005152288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33399019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37168 + ... + 38055.

Almost surely, 2^33399012 is an apocalyptic number.

It is an amenable number.

33399012 is an abundant number, since it is smaller than the sum of its proper divisors (46639324).

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

33399012 is a wasteful number, since it uses less digits than its factorization.

33399012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75267 (or 75265 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 33399012 is about 5779.1878322131. The cubic root of 33399012 is about 322.0410297112.

The spelling of 33399012 in words is "thirty-three million, three hundred ninety-nine thousand, twelve".