33438812 has 12 divisors (see below), whose sum is σ = 63837816. Its totient is φ = 15199440.

The previous prime is 33438793. The next prime is 33438817. The reversal of 33438812 is 21883433.

It is a happy number.

It is a super-2 number, since 2×33438812² = 2236308295942688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33438817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379943 + ... + 380030.

It is an arithmetic number, because the mean of its divisors is an integer number (5319818).

Almost surely, 2^33438812 is an apocalyptic number.

It is an amenable number.

33438812 is a deficient number, since it is larger than the sum of its proper divisors (30399004).

33438812 is a wasteful number, since it uses less digits than its factorization.

33438812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759988 (or 759986 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 33438812 is about 5782.6301974102. The cubic root of 33438812 is about 322.1688992135.

The spelling of 33438812 in words is "thirty-three million, four hundred thirty-eight thousand, eight hundred twelve".