16688842 has 8 divisors (see below), whose sum is σ = 25099776. Its totient is φ = 8322252.

The previous prime is 16688803. The next prime is 16688843. The reversal of 16688842 is 24888661.

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

It is not an unprimeable number, because it can be changed into a prime (16688843) 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, 10128 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (3137472).

Almost surely, 2^16688842 is an apocalyptic number.

16688842 is a deficient number, since it is larger than the sum of its proper divisors (8410934).

16688842 is a wasteful number, since it uses less digits than its factorization.

16688842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22172.

The product of its digits is 147456, while the sum is 43.

The square root of 16688842 is about 4085.1979144223. The cubic root of 16688842 is about 255.5497150384.

The spelling of 16688842 in words is "sixteen million, six hundred eighty-eight thousand, eight hundred forty-two".