16785980 has 24 divisors (see below), whose sum is σ = 35831040. Its totient is φ = 6603840.

The previous prime is 16785961. The next prime is 16785991. The reversal of 16785980 is 8958761.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5660 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (1492960).

Almost surely, 2^16785980 is an apocalyptic number.

16785980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16785980 is an abundant number, since it is smaller than the sum of its proper divisors (19045060).

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

16785980 is a wasteful number, since it uses less digits than its factorization.

16785980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13829 (or 13827 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 16785980 is about 4097.0696845428. The cubic root of 16785980 is about 256.0445682496.

The spelling of 16785980 in words is "sixteen million, seven hundred eighty-five thousand, nine hundred eighty".