200809530 has 40 divisors (see below), whose sum is σ = 539956692. Its totient is φ = 53548992.

The previous prime is 200809529. The next prime is 200809549. The reversal of 200809530 is 35908002.

It can be written as a sum of positive squares in 2 ways, for example, as 178142409 + 22667121 = 13347^2 + 4761^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 200809494 and 200809503.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 123147 + ... + 124766.

Almost surely, 2^200809530 is an apocalyptic number.

200809530 is an abundant number, since it is smaller than the sum of its proper divisors (339147162).

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

200809530 is a wasteful number, since it uses less digits than its factorization.

200809530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247932 (or 247923 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 200809530 is about 14170.7279276684. The cubic root of 200809530 is about 585.5915121553.

The spelling of 200809530 in words is "two hundred million, eight hundred nine thousand, five hundred thirty".