33806816 has 12 divisors (see below), whose sum is σ = 66557232. Its totient is φ = 16903392.

The previous prime is 33806807. The next prime is 33806819. The reversal of 33806816 is 61860833.

It is a happy number.

It is a super-2 number, since 2×33806816² = 2285801616115712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33806819) 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 as a sum of consecutive naturals, namely, 528200 + ... + 528263.

It is an arithmetic number, because the mean of its divisors is an integer number (5546436).

Almost surely, 2^33806816 is an apocalyptic number.

It is an amenable number.

33806816 is a deficient number, since it is larger than the sum of its proper divisors (32750416).

33806816 is a wasteful number, since it uses less digits than its factorization.

33806816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056473 (or 1056465 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 33806816 is about 5814.3629057705. The cubic root of 33806816 is about 323.3464445977.

The spelling of 33806816 in words is "thirty-three million, eight hundred six thousand, eight hundred sixteen".