16887227 has 4 divisors (see below), whose sum is σ = 19299696. Its totient is φ = 14474760.

The previous prime is 16887223. The next prime is 16887253. The reversal of 16887227 is 72278861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16887227 - 2² = 16887223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16887223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206224 + ... + 1206237.

It is an arithmetic number, because the mean of its divisors is an integer number (4824924).

Almost surely, 2^16887227 is an apocalyptic number.

16887227 is a deficient number, since it is larger than the sum of its proper divisors (2412469).

16887227 is an equidigital number, since it uses as much as digits as its factorization.

16887227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412468.

The product of its digits is 75264, while the sum is 41.

The square root of 16887227 is about 4109.4071348553. The cubic root of 16887227 is about 256.5583263074.

The spelling of 16887227 in words is "sixteen million, eight hundred eighty-seven thousand, two hundred twenty-seven".