16880000 has 80 divisors (see below), whose sum is σ = 42220860. Its totient is φ = 6720000.

The previous prime is 16879991. The next prime is 16880011. The reversal of 16880000 is 8861.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79895 + ... + 80105.

Almost surely, 2^16880000 is an apocalyptic number.

16880000 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 16880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21110430).

16880000 is an abundant number, since it is smaller than the sum of its proper divisors (25340860).

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

16880000 is an frugal number, since it uses more digits than its factorization.

16880000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 16880000 is about 4108.5277168348. The cubic root of 16880000 is about 256.5217224769.

Adding to 16880000 its reverse (8861), we get a palindrome (16888861).

The spelling of 16880000 in words is "sixteen million, eight hundred eighty thousand".