33438942 has 12 divisors (see below), whose sum is σ = 72451080. Its totient is φ = 11146308.

The previous prime is 33438931. The next prime is 33438947. The reversal of 33438942 is 24983433.

It is a happy number.

It is a super-2 number, since 2×33438942² = 2236325684158728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33438897 and 33438906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33438947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 928842 + ... + 928877.

It is an arithmetic number, because the mean of its divisors is an integer number (6037590).

Almost surely, 2^33438942 is an apocalyptic number.

33438942 is an abundant number, since it is smaller than the sum of its proper divisors (39012138).

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

33438942 is a wasteful number, since it uses less digits than its factorization.

33438942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857727 (or 1857724 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 33438942 is about 5782.6414379590. The cubic root of 33438942 is about 322.1693167114.

The spelling of 33438942 in words is "thirty-three million, four hundred thirty-eight thousand, nine hundred forty-two".