33000012 has 36 divisors (see below), whose sum is σ = 84038136. Its totient is φ = 10918080.

The previous prime is 33000007. The next prime is 33000029. The reversal of 33000012 is 21000033.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 32999958 and 33000003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1587 + ... + 8277.

Almost surely, 2^33000012 is an apocalyptic number.

It is an amenable number.

33000012 is an abundant number, since it is smaller than the sum of its proper divisors (51038124).

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

33000012 is a wasteful number, since it uses less digits than its factorization.

33000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6838 (or 6833 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 33000012 is about 5744.5636910039. The cubic root of 33000012 is about 320.7534718788.

Adding to 33000012 its reverse (21000033), we get a palindrome (54000045).

The spelling of 33000012 in words is "thirty-three million, twelve", and thus it is an aban number and an uban number.