33186940 has 12 divisors (see below), whose sum is σ = 69692616. Its totient is φ = 13274768.

The previous prime is 33186913. The next prime is 33186949. The reversal of 33186940 is 4968133.

It is a super-2 number, since 2×33186940² = 2202745973127200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33186896 and 33186905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33186949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829654 + ... + 829693.

It is an arithmetic number, because the mean of its divisors is an integer number (5807718).

Almost surely, 2^33186940 is an apocalyptic number.

It is an amenable number.

33186940 is an abundant number, since it is smaller than the sum of its proper divisors (36505676).

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

33186940 is a wasteful number, since it uses less digits than its factorization.

33186940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659356 (or 1659354 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 33186940 is about 5760.8107068363. The cubic root of 33186940 is about 321.3579661027.

The spelling of 33186940 in words is "thirty-three million, one hundred eighty-six thousand, nine hundred forty".