16226217 has 16 divisors (see below), whose sum is σ = 27473280. Its totient is φ = 9272016.

The previous prime is 16226207. The next prime is 16226263. The reversal of 16226217 is 71262261.

16226217 is a `hidden beast` number, since 16 + 22 + 621 + 7 = 666.

It is not a de Polignac number, because 16226217 - 2⁶ = 16226153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16226207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42738 + ... + 43115.

It is an arithmetic number, because the mean of its divisors is an integer number (1717080).

Almost surely, 2^16226217 is an apocalyptic number.

It is an amenable number.

16226217 is a deficient number, since it is larger than the sum of its proper divisors (11247063).

16226217 is an equidigital number, since it uses as much as digits as its factorization.

16226217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85869 (or 85863 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 16226217 is about 4028.1778759136. The cubic root of 16226217 is about 253.1662215446.

Adding to 16226217 its reverse (71262261), we get a palindrome (87488478).

The spelling of 16226217 in words is "sixteen million, two hundred twenty-six thousand, two hundred seventeen".