13723845 has 16 divisors (see below), whose sum is σ = 23250240. Its totient is φ = 6888704.

The previous prime is 13723819. The next prime is 13723867. The reversal of 13723845 is 54832731.

It is a cyclic number.

It is not a de Polignac number, because 13723845 - 2²⁰ = 12675269 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 26655 + ... + 27164.

It is an arithmetic number, because the mean of its divisors is an integer number (1453140).

Almost surely, 2^13723845 is an apocalyptic number.

13723845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13723845 is a deficient number, since it is larger than the sum of its proper divisors (9526395).

13723845 is a wasteful number, since it uses less digits than its factorization.

13723845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53844.

The product of its digits is 20160, while the sum is 33.

The square root of 13723845 is about 3704.5708253454. The cubic root of 13723845 is about 239.4189939069.

The spelling of 13723845 in words is "thirteen million, seven hundred twenty-three thousand, eight hundred forty-five".