16543982 has 16 divisors (see below), whose sum is σ = 30543072. Its totient is φ = 6544800.

The previous prime is 16543981. The next prime is 16543999. The reversal of 16543982 is 28934561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16543981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45269 + ... + 45632.

It is an arithmetic number, because the mean of its divisors is an integer number (1908942).

Almost surely, 2^16543982 is an apocalyptic number.

16543982 is a deficient number, since it is larger than the sum of its proper divisors (13999090).

16543982 is a wasteful number, since it uses less digits than its factorization.

16543982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90923.

The product of its digits is 51840, while the sum is 38.

The square root of 16543982 is about 4067.4294093444. The cubic root of 16543982 is about 254.8081704788.

The spelling of 16543982 in words is "sixteen million, five hundred forty-three thousand, nine hundred eighty-two".