16881120 has 144 divisors (see below), whose sum is σ = 60737040. Its totient is φ = 4257792.

The previous prime is 16881097. The next prime is 16881169. The reversal of 16881120 is 2118861.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27052 + ... + 27668.

It is an arithmetic number, because the mean of its divisors is an integer number (421785).

Almost surely, 2^16881120 is an apocalyptic number.

16881120 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 16881120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30368520).

16881120 is an abundant number, since it is smaller than the sum of its proper divisors (43855920).

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

16881120 is a wasteful number, since it uses less digits than its factorization.

16881120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 16881120 is about 4108.6640164414. The cubic root of 16881120 is about 256.5273958176.

Adding to 16881120 its reverse (2118861), we get a palindrome (18999981).

The spelling of 16881120 in words is "sixteen million, eight hundred eighty-one thousand, one hundred twenty".