200180900 has 18 divisors (see below), whose sum is σ = 434392770. Its totient is φ = 80072320.

The previous prime is 200180873. The next prime is 200180909. The reversal of 200180900 is 9081002.

200180900 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 128164 + 200052736 = 358^2 + 14144^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (200180909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1000805 + ... + 1001004.

Almost surely, 2^200180900 is an apocalyptic number.

200180900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200180900 is an abundant number, since it is smaller than the sum of its proper divisors (234211870).

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

200180900 is a wasteful number, since it uses less digits than its factorization.

200180900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001823 (or 2001816 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 200180900 is about 14148.5299589745. The cubic root of 200180900 is about 584.9798127789.

The spelling of 200180900 in words is "two hundred million, one hundred eighty thousand, nine hundred".