16680156 has 24 divisors (see below), whose sum is σ = 39267984. Its totient is φ = 5510400.

The previous prime is 16680137. The next prime is 16680163. The reversal of 16680156 is 65108661.

It is a congruent number.

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, 4795 + ... + 7506.

It is an arithmetic number, because the mean of its divisors is an integer number (1636166).

Almost surely, 2^16680156 is an apocalyptic number.

It is an amenable number.

16680156 is an abundant number, since it is smaller than the sum of its proper divisors (22587828).

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

16680156 is a wasteful number, since it uses less digits than its factorization.

16680156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12421 (or 12419 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 16680156 is about 4084.1346696699. The cubic root of 16680156 is about 255.5053722368.

It can be divided in two parts, 16680 and 156, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 16680156 in words is "sixteen million, six hundred eighty thousand, one hundred fifty-six".