16544213 has 12 divisors (see below), whose sum is σ = 20378412. Its totient is φ = 13345920.

The previous prime is 16544161. The next prime is 16544219. The reversal of 16544213 is 31244561.

It can be written as a sum of positive squares in 2 ways, for example, as 5207524 + 11336689 = 2282^2 + 3367^2 .

It is not a de Polignac number, because 16544213 - 2⁶ = 16544149 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 (16544219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9098 + ... + 10763.

It is an arithmetic number, because the mean of its divisors is an integer number (1698201).

Almost surely, 2^16544213 is an apocalyptic number.

It is an amenable number.

16544213 is a deficient number, since it is larger than the sum of its proper divisors (3834199).

16544213 is a wasteful number, since it uses less digits than its factorization.

16544213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19892 (or 19885 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 16544213 is about 4067.4578055587. The cubic root of 16544213 is about 254.8093564169.

Adding to 16544213 its reverse (31244561), we get a palindrome (47788774).

The spelling of 16544213 in words is "sixteen million, five hundred forty-four thousand, two hundred thirteen".