305730260 has 144 divisors (see below), whose sum is σ = 762556032. Its totient is φ = 102009600.

The previous prime is 305730259. The next prime is 305730307. The reversal of 305730260 is 62037503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4306025 + ... + 4306095.

It is an arithmetic number, because the mean of its divisors is an integer number (5295528).

Almost surely, 2^305730260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305730260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381278016).

305730260 is an abundant number, since it is smaller than the sum of its proper divisors (456825772).

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

305730260 is a wasteful number, since it uses less digits than its factorization.

305730260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 305730260 is about 17485.1439799620. The cubic root of 305730260 is about 673.6683467237.

Adding to 305730260 its reverse (62037503), we get a palindrome (367767763).

The spelling of 305730260 in words is "three hundred five million, seven hundred thirty thousand, two hundred sixty".