11812857 has 8 divisors (see below), whose sum is σ = 18000576. Its totient is φ = 6750192.

The previous prime is 11812849. The next prime is 11812873. The reversal of 11812857 is 75821811.

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

It is not a de Polignac number, because 11812857 - 2³ = 11812849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11812877) 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, 281238 + ... + 281279.

It is an arithmetic number, because the mean of its divisors is an integer number (2250072).

Almost surely, 2^11812857 is an apocalyptic number.

It is an amenable number.

11812857 is a deficient number, since it is larger than the sum of its proper divisors (6187719).

11812857 is an equidigital number, since it uses as much as digits as its factorization.

11812857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562527.

The product of its digits is 4480, while the sum is 33.

The square root of 11812857 is about 3436.9837066824. The cubic root of 11812857 is about 227.7464671792.

The spelling of 11812857 in words is "eleven million, eight hundred twelve thousand, eight hundred fifty-seven".