305044220130 has 128 divisors (see below), whose sum is σ = 808142420736. Its totient is φ = 73211904000.

The previous prime is 305044220093. The next prime is 305044220137. The reversal of 305044220130 is 31022440503.

It is a self number, because there is not a number n which added to its sum of digits gives 305044220130.

It is not an unprimeable number, because it can be changed into a prime (305044220137) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31767330 + ... + 31776930.

It is an arithmetic number, because the mean of its divisors is an integer number (6313612662).

Almost surely, 2^305044220130 is an apocalyptic number.

305044220130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 305044220130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404071210368).

305044220130 is an abundant number, since it is smaller than the sum of its proper divisors (503098200606).

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

305044220130 is a wasteful number, since it uses less digits than its factorization.

305044220130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11652.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 305044220130 its reverse (31022440503), we get a palindrome (336066660633).

The spelling of 305044220130 in words is "three hundred five billion, forty-four million, two hundred twenty thousand, one hundred thirty".