13724019 has 8 divisors (see below), whose sum is σ = 20331920. Its totient is φ = 9149328.

The previous prime is 13724017. The next prime is 13724021. The reversal of 13724019 is 91042731.

13724019 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13724017) and next prime (13724021).

It is not a de Polignac number, because 13724019 - 2¹ = 13724017 is a prime.

It is a super-2 number, since 2×13724019² = 376697395024722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 508297 = 13724019 / (1 + 3 + 7 + 2 + 4 + 0 + 1 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13723983 and 13724001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13724017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254122 + ... + 254175.

It is an arithmetic number, because the mean of its divisors is an integer number (2541490).

Almost surely, 2^13724019 is an apocalyptic number.

13724019 is a deficient number, since it is larger than the sum of its proper divisors (6607901).

13724019 is an equidigital number, since it uses as much as digits as its factorization.

13724019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508306 (or 508300 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 13724019 is about 3704.5943097727. The cubic root of 13724019 is about 239.4200057402.

The spelling of 13724019 in words is "thirteen million, seven hundred twenty-four thousand, nineteen".