13885857 has 16 divisors (see below), whose sum is σ = 20911360. Its totient is φ = 9104400.

The previous prime is 13885853. The next prime is 13885871. The reversal of 13885857 is 75858831.

It is a happy number.

13885857 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13885857 - 2² = 13885853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13885853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2569 + ... + 5862.

It is an arithmetic number, because the mean of its divisors is an integer number (1306960).

Almost surely, 2^13885857 is an apocalyptic number.

It is an amenable number.

13885857 is a deficient number, since it is larger than the sum of its proper divisors (7025503).

13885857 is an equidigital number, since it uses as much as digits as its factorization.

13885857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8501 (or 8495 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 13885857 is about 3726.3731697188. The cubic root of 13885857 is about 240.3574361499.

The spelling of 13885857 in words is "thirteen million, eight hundred eighty-five thousand, eight hundred fifty-seven".