13724919 has 12 divisors (see below), whose sum is σ = 21350056. Its totient is φ = 8446032.

The previous prime is 13724903. The next prime is 13724927. The reversal of 13724919 is 91942731.

13724919 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13724919 - 2⁴ = 13724903 is a prime.

It is a super-2 number, since 2×13724919² = 376746803113122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13724959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58537 + ... + 58770.

Almost surely, 2^13724919 is an apocalyptic number.

13724919 is a deficient number, since it is larger than the sum of its proper divisors (7625137).

13724919 is a wasteful number, since it uses less digits than its factorization.

13724919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117326 (or 117323 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 13724919 is about 3704.7157785720. The cubic root of 13724919 is about 239.4252392240.

The spelling of 13724919 in words is "thirteen million, seven hundred twenty-four thousand, nine hundred nineteen".