200020356 has 18 divisors (see below), whose sum is σ = 505607102. Its totient is φ = 66673440.

The previous prime is 200020319. The next prime is 200020361. The reversal of 200020356 is 653020002.

It can be written as a sum of positive squares in only one way, i.e., 196448256 + 3572100 = 14016^2 + 1890^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2778025 + ... + 2778096.

Almost surely, 2^200020356 is an apocalyptic number.

It is an amenable number.

200020356 is an abundant number, since it is smaller than the sum of its proper divisors (305586746).

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

200020356 is a wasteful number, since it uses less digits than its factorization.

200020356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556131 (or 5556126 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 200020356 is about 14142.8552987012. The cubic root of 200020356 is about 584.8233874045.

Adding to 200020356 its reverse (653020002), we get a palindrome (853040358).

The spelling of 200020356 in words is "two hundred million, twenty thousand, three hundred fifty-six".