200023840 has 24 divisors (see below), whose sum is σ = 472556700. Its totient is φ = 80009472.

The previous prime is 200023823. The next prime is 200023841. The reversal of 200023840 is 48320002.

It is a happy number.

200023840 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 2 ways, for example, as 181602576 + 18421264 = 13476^2 + 4292^2 .

It is not an unprimeable number, because it can be changed into a prime (200023841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624915 + ... + 625234.

Almost surely, 2^200023840 is an apocalyptic number.

200023840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200023840 is an abundant number, since it is smaller than the sum of its proper divisors (272532860).

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

200023840 is a wasteful number, since it uses less digits than its factorization.

200023840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250164 (or 1250156 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 200023840 is about 14142.9784698981. The cubic root of 200023840 is about 584.8267829137.

Adding to 200023840 its reverse (48320002), we get a palindrome (248343842).

The spelling of 200023840 in words is "two hundred million, twenty-three thousand, eight hundred forty".