260304820 has 12 divisors (see below), whose sum is σ = 546640164. Its totient is φ = 104121920.

The previous prime is 260304809. The next prime is 260304851. The reversal of 260304820 is 28403062.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 126023076 + 134281744 = 11226^2 + 11588^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6507601 + ... + 6507640.

It is an arithmetic number, because the mean of its divisors is an integer number (45553347).

Almost surely, 2^260304820 is an apocalyptic number.

260304820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260304820 is an abundant number, since it is smaller than the sum of its proper divisors (286335344).

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

260304820 is a wasteful number, since it uses less digits than its factorization.

260304820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13015250 (or 13015248 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 260304820 is about 16133.9647948048. The cubic root of 260304820 is about 638.4997574703.

Adding to 260304820 its reverse (28403062), we get a palindrome (288707882).

The spelling of 260304820 in words is "two hundred sixty million, three hundred four thousand, eight hundred twenty".