16289872 has 20 divisors (see below), whose sum is σ = 31778100. Its totient is φ = 8089088.

The previous prime is 16289863. The next prime is 16289873. The reversal of 16289872 is 27898261.

It can be written as a sum of positive squares in 2 ways, for example, as 1971216 + 14318656 = 1404^2 + 3784^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16289873) 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, 1033 + ... + 5800.

It is an arithmetic number, because the mean of its divisors is an integer number (1588905).

Almost surely, 2^16289872 is an apocalyptic number.

It is an amenable number.

16289872 is a deficient number, since it is larger than the sum of its proper divisors (15488228).

16289872 is a wasteful number, since it uses less digits than its factorization.

16289872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990 (or 6984 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 16289872 is about 4036.0713571492. The cubic root of 16289872 is about 253.4968442719.

It can be divided in two parts, 16289 and 872, that added together give a square (17161 = 131²).

The spelling of 16289872 in words is "sixteen million, two hundred eighty-nine thousand, eight hundred seventy-two".