33913820 has 12 divisors (see below), whose sum is σ = 71219064. Its totient is φ = 13565520.

The previous prime is 33913813. The next prime is 33913853. The reversal of 33913820 is 2831933.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847826 + ... + 847865.

It is an arithmetic number, because the mean of its divisors is an integer number (5934922).

Almost surely, 2^33913820 is an apocalyptic number.

It is an amenable number.

33913820 is an abundant number, since it is smaller than the sum of its proper divisors (37305244).

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

33913820 is a wasteful number, since it uses less digits than its factorization.

33913820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695700 (or 1695698 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 33913820 is about 5823.5573320780. The cubic root of 33913820 is about 323.6872331025.

The spelling of 33913820 in words is "thirty-three million, nine hundred thirteen thousand, eight hundred twenty".