200545640 has 32 divisors (see below), whose sum is σ = 459746280. Its totient is φ = 78703872.

The previous prime is 200545571. The next prime is 200545649. The reversal of 200545640 is 46545002.

200545640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 199883044 + 662596 = 14138^2 + 814^2 .

It is not an unprimeable number, because it can be changed into a prime (200545649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45179 + ... + 49418.

Almost surely, 2^200545640 is an apocalyptic number.

200545640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200545640 is an abundant number, since it is smaller than the sum of its proper divisors (259200640).

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

200545640 is a wasteful number, since it uses less digits than its factorization.

200545640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94661 (or 94657 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 200545640 is about 14161.4137712306. The cubic root of 200545640 is about 585.3348850831.

The spelling of 200545640 in words is "two hundred million, five hundred forty-five thousand, six hundred forty".