16244644 has 12 divisors (see below), whose sum is σ = 30615004. Its totient is φ = 7497504.

The previous prime is 16244629. The next prime is 16244689. The reversal of 16244644 is 44644261.

It can be written as a sum of positive squares in 2 ways, for example, as 5760000 + 10484644 = 2400^2 + 3238^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 156147 + ... + 156250.

Almost surely, 2^16244644 is an apocalyptic number.

It is an amenable number.

16244644 is a deficient number, since it is larger than the sum of its proper divisors (14370360).

16244644 is a wasteful number, since it uses less digits than its factorization.

16244644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312414 (or 312412 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 16244644 is about 4030.4644893610. The cubic root of 16244644 is about 253.2620197855.

The spelling of 16244644 in words is "sixteen million, two hundred forty-four thousand, six hundred forty-four".