200641820 has 24 divisors (see below), whose sum is σ = 446133744. Its totient is φ = 75535616.

The previous prime is 200641801. The next prime is 200641829. The reversal of 200641820 is 28146002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200641829) 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, 294722 + ... + 295401.

It is an arithmetic number, because the mean of its divisors is an integer number (18588906).

Almost surely, 2^200641820 is an apocalyptic number.

200641820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200641820 is an abundant number, since it is smaller than the sum of its proper divisors (245491924).

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

200641820 is a wasteful number, since it uses less digits than its factorization.

200641820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590149 (or 590147 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 200641820 is about 14164.8092115637. The cubic root of 200641820 is about 585.4284440218.

Adding to 200641820 its reverse (28146002), we get a palindrome (228787822).

The spelling of 200641820 in words is "two hundred million, six hundred forty-one thousand, eight hundred twenty".