16289444 has 12 divisors (see below), whose sum is σ = 29044764. Its totient is φ = 7990944.

The previous prime is 16289443. The next prime is 16289447. The reversal of 16289444 is 44498261.

16289444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9684544 + 6604900 = 3112^2 + 2570^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16289398 and 16289407.

It is not an unprimeable number, because it can be changed into a prime (16289443) 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, 38207 + ... + 38630.

It is an arithmetic number, because the mean of its divisors is an integer number (2420397).

Almost surely, 2^16289444 is an apocalyptic number.

It is an amenable number.

16289444 is a deficient number, since it is larger than the sum of its proper divisors (12755320).

16289444 is a wasteful number, since it uses less digits than its factorization.

16289444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76894 (or 76892 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 16289444 is about 4036.0183349435. The cubic root of 16289444 is about 253.4946241275.

It can be divided in two parts, 16 and 289444, that multiplied together give a square (4631104 = 2152²).

The spelling of 16289444 in words is "sixteen million, two hundred eighty-nine thousand, four hundred forty-four".