33393172 has 6 divisors (see below), whose sum is σ = 58438058. Its totient is φ = 16696584.

The previous prime is 33393161. The next prime is 33393179. The reversal of 33393172 is 27139333.

It can be written as a sum of positive squares in only one way, i.e., 18369796 + 15023376 = 4286^2 + 3876^2 .

It is a super-2 number, since 2×33393172² = 2230207872443168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33393179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4174143 + ... + 4174150.

Almost surely, 2^33393172 is an apocalyptic number.

It is an amenable number.

33393172 is a deficient number, since it is larger than the sum of its proper divisors (25044886).

33393172 is a wasteful number, since it uses less digits than its factorization.

33393172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8348297 (or 8348295 counting only the distinct ones).

The product of its digits is 10206, while the sum is 31.

The square root of 33393172 is about 5778.6825488168. The cubic root of 33393172 is about 322.0222584050.

The spelling of 33393172 in words is "thirty-three million, three hundred ninety-three thousand, one hundred seventy-two".