33433138 has 4 divisors (see below), whose sum is σ = 50149710. Its totient is φ = 16716568.

The previous prime is 33433133. The next prime is 33433157. The reversal of 33433138 is 83133433.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29735209 + 3697929 = 5453^2 + 1923^2 .

It is a super-2 number, since 2×33433138² = 2235549433054088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33433133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8358283 + ... + 8358286.

Almost surely, 2^33433138 is an apocalyptic number.

33433138 is a deficient number, since it is larger than the sum of its proper divisors (16716572).

33433138 is a wasteful number, since it uses less digits than its factorization.

33433138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16716571.

The product of its digits is 7776, while the sum is 28.

The square root of 33433138 is about 5782.1395693982. The cubic root of 33433138 is about 322.1506759810.

The spelling of 33433138 in words is "thirty-three million, four hundred thirty-three thousand, one hundred thirty-eight".