200000385820 has 24 divisors (see below), whose sum is σ = 420014375424. Its totient is φ = 79997570496.

The previous prime is 200000385811. The next prime is 200000385829. The reversal of 200000385820 is 28583000002.

It is an interprime number because it is at equal distance from previous prime (200000385811) and next prime (200000385829).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000385829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549594 + ... + 837886.

It is an arithmetic number, because the mean of its divisors is an integer number (17500598976).

Almost surely, 2^200000385820 is an apocalyptic number.

200000385820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200000385820 is an abundant number, since it is smaller than the sum of its proper divisors (220013989604).

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

200000385820 is a wasteful number, since it uses less digits than its factorization.

200000385820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322989 (or 322987 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 200000385820 its reverse (28583000002), we get a palindrome (228583385822).

The spelling of 200000385820 in words is "two hundred billion, three hundred eighty-five thousand, eight hundred twenty".