13633968 has 20 divisors (see below), whose sum is σ = 35221208. Its totient is φ = 4544640.

The previous prime is 13633943. The next prime is 13633979. The reversal of 13633968 is 86933631.

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, 141973 + ... + 142068.

Almost surely, 2^13633968 is an apocalyptic number.

It is an amenable number.

13633968 is an abundant number, since it is smaller than the sum of its proper divisors (21587240).

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

13633968 is a wasteful number, since it uses less digits than its factorization.

13633968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284052 (or 284046 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 13633968 is about 3692.4203444353. The cubic root of 13633968 is about 238.8951998173.

The spelling of 13633968 in words is "thirteen million, six hundred thirty-three thousand, nine hundred sixty-eight".