200168440 has 64 divisors (see below), whose sum is σ = 476863200. Its totient is φ = 75489792.

The previous prime is 200168417. The next prime is 200168467. The reversal of 200168440 is 44861002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47874 + ... + 51886.

Almost surely, 2^200168440 is an apocalyptic number.

200168440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200168440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238431600).

200168440 is an abundant number, since it is smaller than the sum of its proper divisors (276694760).

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

200168440 is a wasteful number, since it uses less digits than its factorization.

200168440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 200168440 is about 14148.0896236912. The cubic root of 200168440 is about 584.9676754243.

The spelling of 200168440 in words is "two hundred million, one hundred sixty-eight thousand, four hundred forty".