16811227 has 4 divisors (see below), whose sum is σ = 16878456. Its totient is φ = 16744000.

The previous prime is 16811203. The next prime is 16811231. The reversal of 16811227 is 72211861.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16811227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16811195 and 16811204.

It is not an unprimeable number, because it can be changed into a prime (16811027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33238 + ... + 33739.

It is an arithmetic number, because the mean of its divisors is an integer number (4219614).

Almost surely, 2^16811227 is an apocalyptic number.

16811227 is a deficient number, since it is larger than the sum of its proper divisors (67229).

16811227 is an equidigital number, since it uses as much as digits as its factorization.

16811227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67228.

The product of its digits is 1344, while the sum is 28.

The square root of 16811227 is about 4100.1496314159. The cubic root of 16811227 is about 256.1728721279.

The spelling of 16811227 in words is "sixteen million, eight hundred eleven thousand, two hundred twenty-seven".