16684872 has 32 divisors (see below), whose sum is σ = 41834880. Its totient is φ = 5545280.

The previous prime is 16684853. The next prime is 16684883. The reversal of 16684872 is 27848661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9538 + ... + 11150.

It is an arithmetic number, because the mean of its divisors is an integer number (1307340).

Almost surely, 2^16684872 is an apocalyptic number.

16684872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16684872 is an abundant number, since it is smaller than the sum of its proper divisors (25150008).

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

16684872 is a wasteful number, since it uses less digits than its factorization.

16684872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2049 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 16684872 is about 4084.7119849507. The cubic root of 16684872 is about 255.5294497453.

It can be divided in two parts, 1668 and 4872, that multiplied together give a triangular number (8126496 = T₄₀₃₁).

The spelling of 16684872 in words is "sixteen million, six hundred eighty-four thousand, eight hundred seventy-two".