16887744 has 112 divisors (see below), whose sum is σ = 51511200. Its totient is φ = 5419008.

The previous prime is 16887743. The next prime is 16887769. The reversal of 16887744 is 44778861.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16887744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16887743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49944 + ... + 50280.

Almost surely, 2^16887744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16887744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25755600).

16887744 is an abundant number, since it is smaller than the sum of its proper divisors (34623456).

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

16887744 is a wasteful number, since it uses less digits than its factorization.

16887744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 371 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 16887744 is about 4109.4700388250. The cubic root of 16887744 is about 256.5609444460.

It can be divided in two parts, 168877 and 44, that added together give a square (168921 = 411²).

The spelling of 16887744 in words is "sixteen million, eight hundred eighty-seven thousand, seven hundred forty-four".