13857723 has 40 divisors (see below), whose sum is σ = 22953216. Its totient is φ = 8262000.

The previous prime is 13857719. The next prime is 13857731. The reversal of 13857723 is 32775831.

It is not a de Polignac number, because 13857723 - 2² = 13857719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13857773) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 91698 + ... + 91848.

Almost surely, 2^13857723 is an apocalyptic number.

13857723 is a deficient number, since it is larger than the sum of its proper divisors (9095493).

13857723 is a wasteful number, since it uses less digits than its factorization.

13857723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 268 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 13857723 is about 3722.5962714213. The cubic root of 13857723 is about 240.1949977732.

The spelling of 13857723 in words is "thirteen million, eight hundred fifty-seven thousand, seven hundred twenty-three".