19800006 has 8 divisors (see below), whose sum is σ = 39600024. Its totient is φ = 6600000.

The previous prime is 19799993. The next prime is 19800083. The reversal of 19800006 is 60000891.

It is a sphenic number, since it is the product of 3 distinct primes.

19800006 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1649995 + ... + 1650006.

It is an arithmetic number, because the mean of its divisors is an integer number (4950003).

Almost surely, 2^19800006 is an apocalyptic number.

19800006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19800006 is a wasteful number, since it uses less digits than its factorization.

19800006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300006.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 19800006 is about 4449.7197664572. The cubic root of 19800006 is about 270.5339502262.

Adding to 19800006 its reverse (60000891), we get a palindrome (79800897).

The spelling of 19800006 in words is "nineteen million, eight hundred thousand, six".