13726345 has 4 divisors (see below), whose sum is σ = 16471620. Its totient is φ = 10981072.

The previous prime is 13726333. The next prime is 13726351. The reversal of 13726345 is 54362731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3873024 + 9853321 = 1968^2 + 3139^2 .

It is a cyclic number.

It is not a de Polignac number, because 13726345 - 2¹³ = 13718153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1372630 + ... + 1372639.

It is an arithmetic number, because the mean of its divisors is an integer number (4117905).

Almost surely, 2^13726345 is an apocalyptic number.

It is an amenable number.

13726345 is a deficient number, since it is larger than the sum of its proper divisors (2745275).

13726345 is an equidigital number, since it uses as much as digits as its factorization.

13726345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745274.

The product of its digits is 15120, while the sum is 31.

The square root of 13726345 is about 3704.9082309822. The cubic root of 13726345 is about 239.4335309200.

The spelling of 13726345 in words is "thirteen million, seven hundred twenty-six thousand, three hundred forty-five".