33990172 has 24 divisors (see below), whose sum is σ = 61535376. Its totient is φ = 16418688.

The previous prime is 33990163. The next prime is 33990193. The reversal of 33990172 is 27109933.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13008 + ... + 15400.

It is an arithmetic number, because the mean of its divisors is an integer number (2563974).

Almost surely, 2^33990172 is an apocalyptic number.

It is an amenable number.

33990172 is a deficient number, since it is larger than the sum of its proper divisors (27545204).

33990172 is a wasteful number, since it uses less digits than its factorization.

33990172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517 (or 2515 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 33990172 is about 5830.1090898885. The cubic root of 33990172 is about 323.9299625071.

The spelling of 33990172 in words is "thirty-three million, nine hundred ninety thousand, one hundred seventy-two".