16881072 has 60 divisors (see below), whose sum is σ = 47244744. Its totient is φ = 5191680.

The previous prime is 16881061. The next prime is 16881077. The reversal of 16881072 is 27018861.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16881077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7072 + ... + 9152.

Almost surely, 2^16881072 is an apocalyptic number.

16881072 is a gapful number since it is divisible by the number (12) 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 16881072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23622372).

16881072 is an abundant number, since it is smaller than the sum of its proper divisors (30363672).

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

16881072 is a wasteful number, since it uses less digits than its factorization.

16881072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 16881072 is about 4108.6581751224. The cubic root of 16881072 is about 256.5271526796.

The spelling of 16881072 in words is "sixteen million, eight hundred eighty-one thousand, seventy-two".