16680924 has 72 divisors (see below), whose sum is σ = 47004720. Its totient is φ = 5085504.

The previous prime is 16680919. The next prime is 16680943. The reversal of 16680924 is 42908661.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152982 + ... + 153090.

Almost surely, 2^16680924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16680924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23502360).

16680924 is an abundant number, since it is smaller than the sum of its proper divisors (30323796).

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

16680924 is a wasteful number, since it uses less digits than its factorization.

16680924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 16680924 is about 4084.2286909526. The cubic root of 16680924 is about 255.5092935653.

The spelling of 16680924 in words is "sixteen million, six hundred eighty thousand, nine hundred twenty-four".