200040020 has 72 divisors (see below), whose sum is σ = 455364504. Its totient is φ = 73775104.

The previous prime is 200040011. The next prime is 200040041. The reversal of 200040020 is 20040002.

It can be written as a sum of positive squares in 12 ways, for example, as 7496644 + 192543376 = 2738^2 + 13876^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 306014 + ... + 306666.

It is an arithmetic number, because the mean of its divisors is an integer number (6324507).

Almost surely, 2^200040020 is an apocalyptic number.

200040020 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 200040020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227682252).

200040020 is an abundant number, since it is smaller than the sum of its proper divisors (255324484).

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

200040020 is a wasteful number, since it uses less digits than its factorization.

200040020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 200040020 is about 14143.5504736258. The cubic root of 200040020 is about 584.8425514378.

Adding to 200040020 its reverse (20040002), we get a palindrome (220080022).

The spelling of 200040020 in words is "two hundred million, forty thousand, twenty".