16349866 has 8 divisors (see below), whose sum is σ = 26411364. Its totient is φ = 7546080.

The previous prime is 16349863. The next prime is 16349867. The reversal of 16349866 is 66894361.

It can be written as a sum of positive squares in 2 ways, for example, as 15093225 + 1256641 = 3885^2 + 1121^2 .

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 (16349863) 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, 314395 + ... + 314446.

Almost surely, 2^16349866 is an apocalyptic number.

16349866 is a deficient number, since it is larger than the sum of its proper divisors (10061498).

16349866 is a wasteful number, since it uses less digits than its factorization.

16349866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628856.

The product of its digits is 186624, while the sum is 43.

The square root of 16349866 is about 4043.4967540484. The cubic root of 16349866 is about 253.8076643440.

The spelling of 16349866 in words is "sixteen million, three hundred forty-nine thousand, eight hundred sixty-six".