33542172 has 18 divisors (see below), whose sum is σ = 84787248. Its totient is φ = 11180712.

The previous prime is 33542167. The next prime is 33542189. The reversal of 33542172 is 27124533.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×33542172² = 2250154604955168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 465828 + ... + 465899.

Almost surely, 2^33542172 is an apocalyptic number.

It is an amenable number.

33542172 is an abundant number, since it is smaller than the sum of its proper divisors (51245076).

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

33542172 is a wasteful number, since it uses less digits than its factorization.

33542172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931737 (or 931732 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 33542172 is about 5791.5604114953. The cubic root of 33542172 is about 322.5005011710.

Subtracting from 33542172 its sum of digits (27), we obtain a triangular number (33542145 = T₈₁₉₀).

The spelling of 33542172 in words is "thirty-three million, five hundred forty-two thousand, one hundred seventy-two".