200440530 has 48 divisors (see below), whose sum is σ = 525783960. Its totient is φ = 52975104.

The previous prime is 200440529. The next prime is 200440531. The reversal of 200440530 is 35044002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (200440529) and next prime (200440531).

It can be written as a sum of positive squares in 4 ways, for example, as 100460529 + 99980001 = 10023^2 + 9999^2 .

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 (200440531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316 + ... + 20024.

Almost surely, 2^200440530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200440530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262891980).

200440530 is an abundant number, since it is smaller than the sum of its proper divisors (325343430).

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

200440530 is a wasteful number, since it uses less digits than its factorization.

200440530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19835 (or 19832 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 200440530 is about 14157.7021440628. The cubic root of 200440530 is about 585.2326052867.

Adding to 200440530 its reverse (35044002), we get a palindrome (235484532).

The spelling of 200440530 in words is "two hundred million, four hundred forty thousand, five hundred thirty".