16688346 has 16 divisors (see below), whose sum is σ = 35133600. Its totient is φ = 5269968.

The previous prime is 16688333. The next prime is 16688377. The reversal of 16688346 is 64388661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16688298 and 16688307.

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, 73081 + ... + 73308.

It is an arithmetic number, because the mean of its divisors is an integer number (2195850).

Almost surely, 2^16688346 is an apocalyptic number.

16688346 is an abundant number, since it is smaller than the sum of its proper divisors (18445254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16688346 is a wasteful number, since it uses less digits than its factorization.

16688346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146413.

The product of its digits is 165888, while the sum is 42.

The square root of 16688346 is about 4085.1372069981. The cubic root of 16688346 is about 255.5471833286.

The spelling of 16688346 in words is "sixteen million, six hundred eighty-eight thousand, three hundred forty-six".