33930988 has 72 divisors (see below), whose sum is σ = 76294176. Its totient is φ = 12856320.

The previous prime is 33930977. The next prime is 33930989. The reversal of 33930988 is 88903933.

It is a super-2 number, since 2×33930988² = 2302623893312288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33930989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349756 + ... + 349852.

Almost surely, 2^33930988 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 33930988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38147088).

33930988 is an abundant number, since it is smaller than the sum of its proper divisors (42363188).

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

33930988 is a wasteful number, since it uses less digits than its factorization.

33930988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 33930988 is about 5825.0311587149. The cubic root of 33930988 is about 323.7418433369.

The spelling of 33930988 in words is "thirty-three million, nine hundred thirty thousand, nine hundred eighty-eight".