20016982 has 4 divisors (see below), whose sum is σ = 30025476. Its totient is φ = 10008490.

The previous prime is 20016977. The next prime is 20017001. The reversal of 20016982 is 28961002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20016982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5004244 + ... + 5004247.

It is an arithmetic number, because the mean of its divisors is an integer number (7506369).

Almost surely, 2^20016982 is an apocalyptic number.

20016982 is a deficient number, since it is larger than the sum of its proper divisors (10008494).

20016982 is a wasteful number, since it uses less digits than its factorization.

20016982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10008493.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 20016982 is about 4474.0341974554. The cubic root of 20016982 is about 271.5185669917.

Adding to 20016982 its reverse (28961002), we get a palindrome (48977984).

The spelling of 20016982 in words is "twenty million, sixteen thousand, nine hundred eighty-two".