33113920 has 56 divisors (see below), whose sum is σ = 90123264. Its totient is φ = 11352576.

The previous prime is 33113917. The next prime is 33113933. The reversal of 33113920 is 2931133.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 33113891 and 33113900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5152 + ... + 9631.

It is an arithmetic number, because the mean of its divisors is an integer number (1609344).

Almost surely, 2^33113920 is an apocalyptic number.

It is an amenable number.

33113920 is an abundant number, since it is smaller than the sum of its proper divisors (57009344).

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

33113920 is a wasteful number, since it uses less digits than its factorization.

33113920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14807 (or 14797 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 33113920 is about 5754.4695672147. The cubic root of 33113920 is about 321.1221023374.

The spelling of 33113920 in words is "thirty-three million, one hundred thirteen thousand, nine hundred twenty".