16438244 has 12 divisors (see below), whose sum is σ = 29759100. Its totient is φ = 7935648.

The previous prime is 16438243. The next prime is 16438259. The reversal of 16438244 is 44283461.

It can be written as a sum of positive squares in 2 ways, for example, as 5953600 + 10484644 = 2440^2 + 3238^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16438244.

It is not an unprimeable number, because it can be changed into a prime (16438243) 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, 70739 + ... + 70970.

It is an arithmetic number, because the mean of its divisors is an integer number (2479925).

Almost surely, 2^16438244 is an apocalyptic number.

It is an amenable number.

16438244 is a deficient number, since it is larger than the sum of its proper divisors (13320856).

16438244 is a wasteful number, since it uses less digits than its factorization.

16438244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141742 (or 141740 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 16438244 is about 4054.4104380292. The cubic root of 16438244 is about 254.2641557161.

It can be divided in two parts, 16 and 438244, that multiplied together give a square (7011904 = 2648²).

The spelling of 16438244 in words is "sixteen million, four hundred thirty-eight thousand, two hundred forty-four".