16922857 has 4 divisors (see below), whose sum is σ = 19340416. Its totient is φ = 14505300.

The previous prime is 16922831. The next prime is 16922881. The reversal of 16922857 is 75822961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16922857 - 2¹⁵ = 16890089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16922887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208769 + ... + 1208782.

It is an arithmetic number, because the mean of its divisors is an integer number (4835104).

Almost surely, 2^16922857 is an apocalyptic number.

It is an amenable number.

16922857 is a deficient number, since it is larger than the sum of its proper divisors (2417559).

16922857 is an equidigital number, since it uses as much as digits as its factorization.

16922857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417558.

The product of its digits is 60480, while the sum is 40.

The square root of 16922857 is about 4113.7400258159. The cubic root of 16922857 is about 256.7386352034.

The spelling of 16922857 in words is "sixteen million, nine hundred twenty-two thousand, eight hundred fifty-seven".