16688422 has 16 divisors (see below), whose sum is σ = 26429760. Its totient is φ = 7881192.

The previous prime is 16688411. The next prime is 16688437. The reversal of 16688422 is 22488661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24093 + ... + 24775.

It is an arithmetic number, because the mean of its divisors is an integer number (1651860).

Almost surely, 2^16688422 is an apocalyptic number.

16688422 is a deficient number, since it is larger than the sum of its proper divisors (9741338).

16688422 is a wasteful number, since it uses less digits than its factorization.

16688422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347.

The product of its digits is 36864, while the sum is 37.

The square root of 16688422 is about 4085.1465090006. The cubic root of 16688422 is about 255.5475712551.

It can be divided in two parts, 166 and 88422, that added together give a palindrome (88588).

The spelling of 16688422 in words is "sixteen million, six hundred eighty-eight thousand, four hundred twenty-two".