33330940 has 48 divisors (see below), whose sum is σ = 74188800. Its totient is φ = 12543552.

The previous prime is 33330937. The next prime is 33330961. The reversal of 33330940 is 4903333.

It is a happy number.

It is a super-2 number, since 2×33330940² = 2221903122567200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 90637 + ... + 91003.

It is an arithmetic number, because the mean of its divisors is an integer number (1545600).

Almost surely, 2^33330940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33330940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37094400).

33330940 is an abundant number, since it is smaller than the sum of its proper divisors (40857860).

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

33330940 is a wasteful number, since it uses less digits than its factorization.

33330940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 25.

The square root of 33330940 is about 5773.2954194290. The cubic root of 33330940 is about 321.8220922244.

The spelling of 33330940 in words is "thirty-three million, three hundred thirty thousand, nine hundred forty".