16987266 has 32 divisors (see below), whose sum is σ = 38062080. Its totient is φ = 5615568.

The previous prime is 16987259. The next prime is 16987283. The reversal of 16987266 is 66278961.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5620 + ... + 8096.

It is an arithmetic number, because the mean of its divisors is an integer number (1189440).

Almost surely, 2^16987266 is an apocalyptic number.

16987266 is an abundant number, since it is smaller than the sum of its proper divisors (21074814).

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

16987266 is a wasteful number, since it uses less digits than its factorization.

16987266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615 (or 2609 counting only the distinct ones).

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

The square root of 16987266 is about 4121.5611120060. The cubic root of 16987266 is about 257.0639416568.

The spelling of 16987266 in words is "sixteen million, nine hundred eighty-seven thousand, two hundred sixty-six".