200344140 has 72 divisors (see below), whose sum is σ = 610384320. Its totient is φ = 53190144.

The previous prime is 200344129. The next prime is 200344147. The reversal of 200344140 is 41443002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (200344147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40692 + ... + 45348.

It is an arithmetic number, because the mean of its divisors is an integer number (8477560).

Almost surely, 2^200344140 is an apocalyptic number.

200344140 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 200344140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305192160).

200344140 is an abundant number, since it is smaller than the sum of its proper divisors (410040180).

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

200344140 is a wasteful number, since it uses less digits than its factorization.

200344140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4911 (or 4906 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 200344140 is about 14154.2975805937. The cubic root of 200344140 is about 585.1387792598.

Adding to 200344140 its reverse (41443002), we get a palindrome (241787142).

It can be divided in two parts, 20034 and 4140, that multiplied together give a triangular number (82940760 = T₁₂₈₇₉).

The spelling of 200344140 in words is "two hundred million, three hundred forty-four thousand, one hundred forty".