13721384 has 16 divisors (see below), whose sum is σ = 25792800. Its totient is φ = 6843312.

The previous prime is 13721381. The next prime is 13721419. The reversal of 13721384 is 48312731.

13721384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13721381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559 + ... + 5465.

It is an arithmetic number, because the mean of its divisors is an integer number (1612050).

Almost surely, 2^13721384 is an apocalyptic number.

It is an amenable number.

13721384 is a deficient number, since it is larger than the sum of its proper divisors (12071416).

13721384 is a wasteful number, since it uses less digits than its factorization.

13721384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4352 (or 4348 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 13721384 is about 3704.2386532188. The cubic root of 13721384 is about 239.4046819468.

The spelling of 13721384 in words is "thirteen million, seven hundred twenty-one thousand, three hundred eighty-four".