13921368 has 64 divisors (see below), whose sum is σ = 37260000. Its totient is φ = 4319232.

The previous prime is 13921333. The next prime is 13921373. The reversal of 13921368 is 86312931.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 60678 + ... + 60906.

Almost surely, 2^13921368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13921368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18630000).

13921368 is an abundant number, since it is smaller than the sum of its proper divisors (23338632).

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

13921368 is a wasteful number, since it uses less digits than its factorization.

13921368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 400 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 13921368 is about 3731.1349479749. The cubic root of 13921368 is about 240.5621544540.

The spelling of 13921368 in words is "thirteen million, nine hundred twenty-one thousand, three hundred sixty-eight".