13726823 has 4 divisors (see below), whose sum is σ = 14974728. Its totient is φ = 12478920.

The previous prime is 13726781. The next prime is 13726849. The reversal of 13726823 is 32862731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32862731 = 11 ⋅2987521.

It is a cyclic number.

It is not a de Polignac number, because 13726823 - 2¹² = 13722727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13726823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13726723) 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 3 ways as a sum of consecutive naturals, for example, 623936 + ... + 623957.

It is an arithmetic number, because the mean of its divisors is an integer number (3743682).

Almost surely, 2^13726823 is an apocalyptic number.

13726823 is a deficient number, since it is larger than the sum of its proper divisors (1247905).

13726823 is a wasteful number, since it uses less digits than its factorization.

13726823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247904.

The product of its digits is 12096, while the sum is 32.

The square root of 13726823 is about 3704.9727394409. The cubic root of 13726823 is about 239.4363101959.

The spelling of 13726823 in words is "thirteen million, seven hundred twenty-six thousand, eight hundred twenty-three".