19980006 has 16 divisors (see below), whose sum is σ = 40230000. Its totient is φ = 6615008.

The previous prime is 19979987. The next prime is 19980019. The reversal of 19980006 is 60008991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10281 + ... + 12068.

It is an arithmetic number, because the mean of its divisors is an integer number (2514375).

Almost surely, 2^19980006 is an apocalyptic number.

19980006 is an abundant number, since it is smaller than the sum of its proper divisors (20249994).

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

19980006 is a wasteful number, since it uses less digits than its factorization.

19980006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22503.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 19980006 is about 4469.8999988814. The cubic root of 19980006 is about 271.3512780576.

Adding to 19980006 its reverse (60008991), we get a palindrome (79988997).

The spelling of 19980006 in words is "nineteen million, nine hundred eighty thousand, six".