16985940 has 24 divisors (see below), whose sum is σ = 47560800. Its totient is φ = 4529568.

The previous prime is 16985911. The next prime is 16985951. The reversal of 16985940 is 4958961.

It is a junction number, because it is equal to n+sod(n) for n = 16985892 and 16985901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141490 + ... + 141609.

It is an arithmetic number, because the mean of its divisors is an integer number (1981700).

Almost surely, 2^16985940 is an apocalyptic number.

16985940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16985940 is an abundant number, since it is smaller than the sum of its proper divisors (30574860).

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

16985940 is a wasteful number, since it uses less digits than its factorization.

16985940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283111 (or 283109 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 16985940 is about 4121.4002474887. The cubic root of 16985940 is about 257.0572528101.

The spelling of 16985940 in words is "sixteen million, nine hundred eighty-five thousand, nine hundred forty".