200640340 has 12 divisors (see below), whose sum is σ = 421344756. Its totient is φ = 80256128.

The previous prime is 200640337. The next prime is 200640353. The reversal of 200640340 is 43046002.

It can be written as a sum of positive squares in 2 ways, for example, as 79067664 + 121572676 = 8892^2 + 11026^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5015989 + ... + 5016028.

It is an arithmetic number, because the mean of its divisors is an integer number (35112063).

Almost surely, 2^200640340 is an apocalyptic number.

200640340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200640340 is an abundant number, since it is smaller than the sum of its proper divisors (220704416).

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

200640340 is a wasteful number, since it uses less digits than its factorization.

200640340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10032026 (or 10032024 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 200640340 is about 14164.7569693235. The cubic root of 200640340 is about 585.4270045807.

Adding to 200640340 its reverse (43046002), we get a palindrome (243686342).

The spelling of 200640340 in words is "two hundred million, six hundred forty thousand, three hundred forty".