16887226 has 4 divisors (see below), whose sum is σ = 25330842. Its totient is φ = 8443612.

The previous prime is 16887223. The next prime is 16887253. The reversal of 16887226 is 62278861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62278861 = 3137 ⋅19853.

It can be written as a sum of positive squares in only one way, i.e., 15327225 + 1560001 = 3915^2 + 1249^2 .

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4221805 + ... + 4221808.

Almost surely, 2^16887226 is an apocalyptic number.

16887226 is a deficient number, since it is larger than the sum of its proper divisors (8443616).

16887226 is an equidigital number, since it uses as much as digits as its factorization.

16887226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443615.

The product of its digits is 64512, while the sum is 40.

The square root of 16887226 is about 4109.4070131833. The cubic root of 16887226 is about 256.5583212433.

The spelling of 16887226 in words is "sixteen million, eight hundred eighty-seven thousand, two hundred twenty-six".