13724407 has 4 divisors (see below), whose sum is σ = 13731880. Its totient is φ = 13716936.

The previous prime is 13724387. The next prime is 13724449. The reversal of 13724407 is 70442731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70442731 = 113 ⋅623387.

It is a cyclic number.

It is not a de Polignac number, because 13724407 - 2¹⁹ = 13200119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13724497) 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, 1144 + ... + 5362.

It is an arithmetic number, because the mean of its divisors is an integer number (3432970).

Almost surely, 2^13724407 is an apocalyptic number.

13724407 is a deficient number, since it is larger than the sum of its proper divisors (7473).

13724407 is an equidigital number, since it uses as much as digits as its factorization.

13724407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 13724407 is about 3704.6466768101. The cubic root of 13724407 is about 239.4222619813.

The spelling of 13724407 in words is "thirteen million, seven hundred twenty-four thousand, four hundred seven".