200020520 has 128 divisors (see below), whose sum is σ = 541728000. Its totient is φ = 65028096.

The previous prime is 200020517. The next prime is 200020523. The reversal of 200020520 is 25020002.

It is an interprime number because it is at equal distance from previous prime (200020517) and next prime (200020523).

It is not an unprimeable number, because it can be changed into a prime (200020523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445256 + ... + 445704.

It is an arithmetic number, because the mean of its divisors is an integer number (4232250).

Almost surely, 2^200020520 is an apocalyptic number.

200020520 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 200020520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270864000).

200020520 is an abundant number, since it is smaller than the sum of its proper divisors (341707480).

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

200020520 is a wasteful number, since it uses less digits than its factorization.

200020520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 200020520 is about 14142.8610966805. The cubic root of 200020520 is about 584.8235472399.

Adding to 200020520 its reverse (25020002), we get a palindrome (225040522).

The spelling of 200020520 in words is "two hundred million, twenty thousand, five hundred twenty".