33423012 has 36 divisors (see below), whose sum is σ = 96556096. Its totient is φ = 9549360.

The previous prime is 33423011. The next prime is 33423023. The reversal of 33423012 is 21032433.

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

It is a super-2 number, since 2×33423012² = 2234195462304288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (33423011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66064 + ... + 66567.

Almost surely, 2^33423012 is an apocalyptic number.

It is an amenable number.

33423012 is an abundant number, since it is smaller than the sum of its proper divisors (63133084).

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

33423012 is a wasteful number, since it uses less digits than its factorization.

33423012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132648 (or 132643 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 33423012 is about 5781.2638756590. The cubic root of 33423012 is about 322.1181490997.

Adding to 33423012 its reverse (21032433), we get a palindrome (54455445).

The spelling of 33423012 in words is "thirty-three million, four hundred twenty-three thousand, twelve".