16887280 has 60 divisors (see below), whose sum is σ = 40825512. Its totient is φ = 6496000.

The previous prime is 16887271. The next prime is 16887287. The reversal of 16887280 is 8278861.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16887287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67155 + ... + 67405.

Almost surely, 2^16887280 is an apocalyptic number.

16887280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16887280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20412756).

16887280 is an abundant number, since it is smaller than the sum of its proper divisors (23938232).

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

16887280 is a wasteful number, since it uses less digits than its factorization.

16887280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 16887280 is about 4109.4135834691. The cubic root of 16887280 is about 256.5585947070.

The spelling of 16887280 in words is "sixteen million, eight hundred eighty-seven thousand, two hundred eighty".