33804813 has 16 divisors (see below), whose sum is σ = 51615360. Its totient is φ = 19278336.

The previous prime is 33804809. The next prime is 33804833. The reversal of 33804813 is 31840833.

It is not a de Polignac number, because 33804813 - 2² = 33804809 is a prime.

It is a super-2 number, since 2×33804813² = 2285530763929938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33804833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11653 + ... + 14261.

It is an arithmetic number, because the mean of its divisors is an integer number (3225960).

Almost surely, 2^33804813 is an apocalyptic number.

It is an amenable number.

33804813 is a deficient number, since it is larger than the sum of its proper divisors (17810547).

33804813 is a wasteful number, since it uses less digits than its factorization.

33804813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 33804813 is about 5814.1906573486. The cubic root of 33804813 is about 323.3400585510.

The spelling of 33804813 in words is "thirty-three million, eight hundred four thousand, eight hundred thirteen".