16226213 has 8 divisors (see below), whose sum is σ = 16487640. Its totient is φ = 15966720.

The previous prime is 16226207. The next prime is 16226263. The reversal of 16226213 is 31262261.

It can be written as a sum of positive squares in 4 ways, for example, as 49729 + 16176484 = 223^2 + 4022^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16226213 - 2¹² = 16222117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16226263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29723 + ... + 30263.

It is an arithmetic number, because the mean of its divisors is an integer number (2060955).

Almost surely, 2^16226213 is an apocalyptic number.

It is an amenable number.

16226213 is a deficient number, since it is larger than the sum of its proper divisors (261427).

16226213 is an equidigital number, since it uses as much as digits as its factorization.

16226213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967.

The product of its digits is 864, while the sum is 23.

The square root of 16226213 is about 4028.1773794112. The cubic root of 16226213 is about 253.1662007415.

Adding to 16226213 its reverse (31262261), we get a palindrome (47488474).

The spelling of 16226213 in words is "sixteen million, two hundred twenty-six thousand, two hundred thirteen".