33868916 has 12 divisors (see below), whose sum is σ = 59815140. Its totient is φ = 16778880.

The previous prime is 33868909. The next prime is 33868921. The reversal of 33868916 is 61986833.

It can be written as a sum of positive squares in 2 ways, for example, as 15840400 + 18028516 = 3980^2 + 4246^2 .

It is a super-2 number, since 2×33868916² = 2294206942030112, which contains 22 as substring.

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, 38405 + ... + 39276.

It is an arithmetic number, because the mean of its divisors is an integer number (4984595).

Almost surely, 2^33868916 is an apocalyptic number.

It is an amenable number.

33868916 is a deficient number, since it is larger than the sum of its proper divisors (25946224).

33868916 is a wasteful number, since it uses less digits than its factorization.

33868916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77794 (or 77792 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 33868916 is about 5819.7006795883. The cubic root of 33868916 is about 323.5443093500.

The spelling of 33868916 in words is "thirty-three million, eight hundred sixty-eight thousand, nine hundred sixteen".