200655840 has 384 divisors, whose sum is σ = 809948160. Its totient is φ = 40550400.

The previous prime is 200655823. The next prime is 200655853. The reversal of 200655840 is 48556002.

200655840 = T₈₅ + T₈₆ + ... + T₁₀₆₃.

It is a super-2 number, since 2×200655840² = 80525532252211200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 200655798 and 200655807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2254516 + ... + 2254604.

It is an arithmetic number, because the mean of its divisors is an integer number (2109240).

Almost surely, 2^200655840 is an apocalyptic number.

200655840 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 200655840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404974080).

200655840 is an abundant number, since it is smaller than the sum of its proper divisors (609292320).

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

200655840 is a wasteful number, since it uses less digits than its factorization.

200655840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 200655840 is about 14165.3040913353. The cubic root of 200655840 is about 585.4420794570.

The spelling of 200655840 in words is "two hundred million, six hundred fifty-five thousand, eight hundred forty".