16279668 has 18 divisors (see below), whose sum is σ = 41151474. Its totient is φ = 5426544.

The previous prime is 16279651. The next prime is 16279691. The reversal of 16279668 is 86697261.

16279668 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8225424 + 8054244 = 2868^2 + 2838^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 226071 + ... + 226142.

It is an arithmetic number, because the mean of its divisors is an integer number (2286193).

Almost surely, 2^16279668 is an apocalyptic number.

16279668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16279668 is an abundant number, since it is smaller than the sum of its proper divisors (24871806).

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

16279668 is a wasteful number, since it uses less digits than its factorization.

16279668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452223 (or 452218 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 16279668 is about 4034.8070585841. The cubic root of 16279668 is about 253.4439029496.

The spelling of 16279668 in words is "sixteen million, two hundred seventy-nine thousand, six hundred sixty-eight".