16683880 has 16 divisors (see below), whose sum is σ = 37538820. Its totient is φ = 6673536.

The previous prime is 16683869. The next prime is 16683889. The reversal of 16683880 is 8838661.

It can be written as a sum of positive squares in 2 ways, for example, as 13704804 + 2979076 = 3702^2 + 1726^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 417097 = 16683880 / (1 + 6 + 6 + 8 + 3 + 8 + 8 + 0).

It is not an unprimeable number, because it can be changed into a prime (16683889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208509 + ... + 208588.

Almost surely, 2^16683880 is an apocalyptic number.

16683880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16683880 is an abundant number, since it is smaller than the sum of its proper divisors (20854940).

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

16683880 is a wasteful number, since it uses less digits than its factorization.

16683880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417108 (or 417104 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 16683880 is about 4084.5905547558. The cubic root of 16683880 is about 255.5243854723.

The spelling of 16683880 in words is "sixteen million, six hundred eighty-three thousand, eight hundred eighty".