200019980 has 24 divisors (see below), whose sum is σ = 420392112. Its totient is φ = 79941312.

The previous prime is 200019979. The next prime is 200019997. The reversal of 200019980 is 89910002.

200019980 is a modest number, since divided by 19980 gives 200 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25619 + ... + 32501.

It is an arithmetic number, because the mean of its divisors is an integer number (17516338).

Almost surely, 2^200019980 is an apocalyptic number.

200019980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200019980 is an abundant number, since it is smaller than the sum of its proper divisors (220372132).

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

200019980 is a wasteful number, since it uses less digits than its factorization.

200019980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8345 (or 8343 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 200019980 is about 14142.8420057639. The cubic root of 200019980 is about 584.8230209523.

Adding to 200019980 its reverse (89910002), we get a palindrome (289929982).

The spelling of 200019980 in words is "two hundred million, nineteen thousand, nine hundred eighty".