13726057 has 4 divisors (see below), whose sum is σ = 13758336. Its totient is φ = 13693780.

The previous prime is 13726003. The next prime is 13726061. The reversal of 13726057 is 75062731.

13726057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75062731 = 23 ⋅3263597.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13726057 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13723057) 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, 15493 + ... + 16354.

It is an arithmetic number, because the mean of its divisors is an integer number (3439584).

Almost surely, 2^13726057 is an apocalyptic number.

It is an amenable number.

13726057 is a deficient number, since it is larger than the sum of its proper divisors (32279).

13726057 is an equidigital number, since it uses as much as digits as its factorization.

13726057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32278.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 13726057 is about 3704.8693634189. The cubic root of 13726057 is about 239.4318563460.

Adding to 13726057 its reverse (75062731), we get a palindrome (88788788).

The spelling of 13726057 in words is "thirteen million, seven hundred twenty-six thousand, fifty-seven".