16500880 has 80 divisors (see below), whose sum is σ = 44354304. Its totient is φ = 5642240.

The previous prime is 16500877. The next prime is 16500889. The reversal of 16500880 is 8800561.

It is a happy number.

16500880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16500889) 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, 14409 + ... + 15511.

Almost surely, 2^16500880 is an apocalyptic number.

16500880 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 16500880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22177152).

16500880 is an abundant number, since it is smaller than the sum of its proper divisors (27853424).

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

16500880 is a wasteful number, since it uses less digits than its factorization.

16500880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 16500880 is about 4062.1275213858. The cubic root of 16500880 is about 254.5866943077.

The spelling of 16500880 in words is "sixteen million, five hundred thousand, eight hundred eighty".