16440744 has 16 divisors (see below), whose sum is σ = 41101920. Its totient is φ = 5480240.

The previous prime is 16440731. The next prime is 16440761. The reversal of 16440744 is 44704461.

It is a super-3 number, since 3×16440744³ (a number of 23 digits) contains 333 as substring.

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, 342492 + ... + 342539.

It is an arithmetic number, because the mean of its divisors is an integer number (2568870).

Almost surely, 2^16440744 is an apocalyptic number.

It is an amenable number.

16440744 is an abundant number, since it is smaller than the sum of its proper divisors (24661176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16440744 is a wasteful number, since it uses less digits than its factorization.

16440744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685040 (or 685036 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 16440744 is about 4054.7187325387. The cubic root of 16440744 is about 254.2770449308.

It can be divided in two parts, 164407 and 44, that added together give a triangular number (164451 = T₅₇₃).

The spelling of 16440744 in words is "sixteen million, four hundred forty thousand, seven hundred forty-four".