16440244 has 12 divisors (see below), whose sum is σ = 30284800. Its totient is φ = 7787448.

The previous prime is 16440223. The next prime is 16440251. The reversal of 16440244 is 44204461.

It is a super-3 number, since 3×16440244³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108084 + ... + 108235.

Almost surely, 2^16440244 is an apocalyptic number.

It is an amenable number.

16440244 is a deficient number, since it is larger than the sum of its proper divisors (13844556).

16440244 is a wasteful number, since it uses less digits than its factorization.

16440244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216342 (or 216340 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 16440244 is about 4054.6570755121. The cubic root of 16440244 is about 254.2744671924.

The spelling of 16440244 in words is "sixteen million, four hundred forty thousand, two hundred forty-four".