16223738 has 8 divisors (see below), whose sum is σ = 24459732. Its totient is φ = 8070496.

The previous prime is 16223737. The next prime is 16223747. The reversal of 16223738 is 83732261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15626209 + 597529 = 3953^2 + 773^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16223737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20195 + ... + 20982.

Almost surely, 2^16223738 is an apocalyptic number.

16223738 is a deficient number, since it is larger than the sum of its proper divisors (8235994).

16223738 is a wasteful number, since it uses less digits than its factorization.

16223738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41376.

The product of its digits is 12096, while the sum is 32.

The square root of 16223738 is about 4027.8701567950. The cubic root of 16223738 is about 253.1533281917.

Adding to 16223738 its reverse (83732261), we get a palindrome (99955999).

It can be divided in two parts, 16223 and 738, that added together give a palindrome (16961).

The spelling of 16223738 in words is "sixteen million, two hundred twenty-three thousand, seven hundred thirty-eight".