204244310440 has 32 divisors (see below), whose sum is σ = 459563095080. Its totient is φ = 81695342592.

The previous prime is 204244310341. The next prime is 204244310443. The reversal of 204244310440 is 44013442402.

It can be written as a sum of positive squares in 4 ways, for example, as 190115184484 + 14129125956 = 436022^2 + 118866^2 .

It is a super-2 number, since 2×204244310440² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204244310399 and 204244310408.

It is not an unprimeable number, because it can be changed into a prime (204244310443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2097064 + ... + 2192296.

Almost surely, 2^204244310440 is an apocalyptic number.

204244310440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204244310440 is an abundant number, since it is smaller than the sum of its proper divisors (255318784640).

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

204244310440 is a wasteful number, since it uses less digits than its factorization.

204244310440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148861 (or 148857 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 204244310440 its reverse (44013442402), we get a palindrome (248257752842).

The spelling of 204244310440 in words is "two hundred four billion, two hundred forty-four million, three hundred ten thousand, four hundred forty".