16278668 has 48 divisors (see below), whose sum is σ = 35239680. Its totient is φ = 6422976.

The previous prime is 16278629. The next prime is 16278671. The reversal of 16278668 is 86687261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19271 + ... + 20097.

It is an arithmetic number, because the mean of its divisors is an integer number (734160).

Almost surely, 2^16278668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16278668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17619840).

16278668 is an abundant number, since it is smaller than the sum of its proper divisors (18961012).

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

16278668 is a wasteful number, since it uses less digits than its factorization.

16278668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 892 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 16278668 is about 4034.6831350182. The cubic root of 16278668 is about 253.4387134684.

The spelling of 16278668 in words is "sixteen million, two hundred seventy-eight thousand, six hundred sixty-eight".