200443640 has 32 divisors (see below), whose sum is σ = 461490480. Its totient is φ = 78312192.

The previous prime is 200443631. The next prime is 200443657. The reversal of 200443640 is 46344002.

It is a happy number.

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, 56549 + ... + 59988.

Almost surely, 2^200443640 is an apocalyptic number.

200443640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200443640 is an abundant number, since it is smaller than the sum of its proper divisors (261046840).

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

200443640 is a wasteful number, since it uses less digits than its factorization.

200443640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116591 (or 116587 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 200443640 is about 14157.8119778446. The cubic root of 200443640 is about 585.2356320598.

Adding to 200443640 its reverse (46344002), we get a palindrome (246787642).

The spelling of 200443640 in words is "two hundred million, four hundred forty-three thousand, six hundred forty".