33402012 has 24 divisors (see below), whose sum is σ = 89072256. Its totient is φ = 9543408.

The previous prime is 33402011. The next prime is 33402023. The reversal of 33402012 is 21020433.

It is a super-2 number, since 2×33402012² = 2231388811296288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33401982 and 33402000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33402011) 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, 198738 + ... + 198905.

It is an arithmetic number, because the mean of its divisors is an integer number (3711344).

Almost surely, 2^33402012 is an apocalyptic number.

It is an amenable number.

33402012 is an abundant number, since it is smaller than the sum of its proper divisors (55670244).

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

33402012 is a wasteful number, since it uses less digits than its factorization.

33402012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397657 (or 397655 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 33402012 is about 5779.4473784264. The cubic root of 33402012 is about 322.0506716547.

Adding to 33402012 its reverse (21020433), we get a palindrome (54422445).

The spelling of 33402012 in words is "thirty-three million, four hundred two thousand, twelve".