14991688 has 16 divisors (see below), whose sum is σ = 29763180. Its totient is φ = 7054848.

The previous prime is 14991679. The next prime is 14991689. The reversal of 14991688 is 88619941.

It can be written as a sum of positive squares in 2 ways, for example, as 11142244 + 3849444 = 3338^2 + 1962^2 .

It is not an unprimeable number, because it can be changed into a prime (14991689) 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, 54981 + ... + 55252.

Almost surely, 2^14991688 is an apocalyptic number.

It is an amenable number.

14991688 is a deficient number, since it is larger than the sum of its proper divisors (14771492).

14991688 is a wasteful number, since it uses less digits than its factorization.

14991688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110256 (or 110252 counting only the distinct ones).

The product of its digits is 124416, while the sum is 46.

The square root of 14991688 is about 3871.9101229238. The cubic root of 14991688 is about 246.5756453389.

The spelling of 14991688 in words is "fourteen million, nine hundred ninety-one thousand, six hundred eighty-eight".