13090857 has 8 divisors (see below), whose sum is σ = 18797184. Its totient is φ = 8055888.

The previous prime is 13090793. The next prime is 13090873. The reversal of 13090857 is 75809031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13090857 - 2⁶ = 13090793 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13090157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167793 + ... + 167870.

It is an arithmetic number, because the mean of its divisors is an integer number (2349648).

Almost surely, 2^13090857 is an apocalyptic number.

It is an amenable number.

13090857 is a deficient number, since it is larger than the sum of its proper divisors (5706327).

13090857 is a wasteful number, since it uses less digits than its factorization.

13090857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335679.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 13090857 is about 3618.1289363427. The cubic root of 13090857 is about 235.6799801577.

Adding to 13090857 its reverse (75809031), we get a palindrome (88899888).

The spelling of 13090857 in words is "thirteen million, ninety thousand, eight hundred fifty-seven".