16117857 has 12 divisors (see below), whose sum is σ = 26607360. Its totient is φ = 9210168.

The previous prime is 16117841. The next prime is 16117859. The reversal of 16117857 is 75871161.

It is a happy number.

It is not a de Polignac number, because 16117857 - 2⁴ = 16117841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16117859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127857 + ... + 127982.

It is an arithmetic number, because the mean of its divisors is an integer number (2217280).

Almost surely, 2^16117857 is an apocalyptic number.

It is an amenable number.

16117857 is a deficient number, since it is larger than the sum of its proper divisors (10489503).

16117857 is a wasteful number, since it uses less digits than its factorization.

16117857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255852 (or 255849 counting only the distinct ones).

The product of its digits is 11760, while the sum is 36.

The square root of 16117857 is about 4014.7050950225. The cubic root of 16117857 is about 252.6014074919.

The spelling of 16117857 in words is "sixteen million, one hundred seventeen thousand, eight hundred fifty-seven".