200100020 has 48 divisors (see below), whose sum is σ = 446476800. Its totient is φ = 75116160.

The previous prime is 200100007. The next prime is 200100031. The reversal of 200100020 is 20001002.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a junction number, because it is equal to n+sod(n) for n = 200099977 and 200100013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39005 + ... + 43835.

It is an arithmetic number, because the mean of its divisors is an integer number (9301600).

Almost surely, 2^200100020 is an apocalyptic number.

200100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223238400).

200100020 is an abundant number, since it is smaller than the sum of its proper divisors (246376780).

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

200100020 is a wasteful number, since it uses less digits than its factorization.

200100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968 (or 4966 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 200100020 is about 14145.6714227356. The cubic root of 200100020 is about 584.9010181474.

Adding to 200100020 its reverse (20001002), we get a palindrome (220101022).

The spelling of 200100020 in words is "two hundred million, one hundred thousand, twenty".