33184989 has 12 divisors (see below), whose sum is σ = 48204000. Its totient is φ = 21998664.

The previous prime is 33184981. The next prime is 33184993. The reversal of 33184989 is 98948133.

It is not a de Polignac number, because 33184989 - 2³ = 33184981 is a prime.

It is a super-2 number, since 2×33184989² = 2202486989860242, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33184981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8689 + ... + 11910.

It is an arithmetic number, because the mean of its divisors is an integer number (4017000).

Almost surely, 2^33184989 is an apocalyptic number.

It is an amenable number.

33184989 is a deficient number, since it is larger than the sum of its proper divisors (15019011).

33184989 is a wasteful number, since it uses less digits than its factorization.

33184989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20784 (or 20781 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 33184989 is about 5760.6413705420. The cubic root of 33184989 is about 321.3516686287.

The spelling of 33184989 in words is "thirty-three million, one hundred eighty-four thousand, nine hundred eighty-nine".