200342640 has 40 divisors (see below), whose sum is σ = 621062928. Its totient is φ = 53424640.

The previous prime is 200342629. The next prime is 200342683. The reversal of 200342640 is 46243002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417141 + ... + 417620.

Almost surely, 2^200342640 is an apocalyptic number.

200342640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200342640 is an abundant number, since it is smaller than the sum of its proper divisors (420720288).

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

200342640 is a wasteful number, since it uses less digits than its factorization.

200342640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834777 (or 834771 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 200342640 is about 14154.2445930541. The cubic root of 200342640 is about 585.1373189220.

Adding to 200342640 its reverse (46243002), we get a palindrome (246585642).

The spelling of 200342640 in words is "two hundred million, three hundred forty-two thousand, six hundred forty".