33911980 has 24 divisors (see below), whose sum is σ = 73141488. Its totient is φ = 13197888.

The previous prime is 33911947. The next prime is 33911989. The reversal of 33911980 is 8911933.

It is not an unprimeable number, because it can be changed into a prime (33911989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22174 + ... + 23653.

It is an arithmetic number, because the mean of its divisors is an integer number (3047562).

Almost surely, 2^33911980 is an apocalyptic number.

It is an amenable number.

33911980 is an abundant number, since it is smaller than the sum of its proper divisors (39229508).

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

33911980 is a wasteful number, since it uses less digits than its factorization.

33911980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45873 (or 45871 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 33911980 is about 5823.3993508946. The cubic root of 33911980 is about 323.6813790949.

The spelling of 33911980 in words is "thirty-three million, nine hundred eleven thousand, nine hundred eighty".