260544420 has 108 divisors (see below), whose sum is σ = 805552020. Its totient is φ = 68163840.

The previous prime is 260544409. The next prime is 260544421. The reversal of 260544420 is 24445062.

It can be written as a sum of positive squares in 6 ways, for example, as 137733696 + 122810724 = 11736^2 + 11082^2 .

It is not an unprimeable number, because it can be changed into a prime (260544421) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 669586 + ... + 669974.

It is an arithmetic number, because the mean of its divisors is an integer number (7458815).

Almost surely, 2^260544420 is an apocalyptic number.

260544420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260544420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402776010).

260544420 is an abundant number, since it is smaller than the sum of its proper divisors (545007600).

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

260544420 is a wasteful number, since it uses less digits than its factorization.

260544420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 260544420 is about 16141.3884161184. The cubic root of 260544420 is about 638.6956017465.

Adding to 260544420 its reverse (24445062), we get a palindrome (284989482).

The spelling of 260544420 in words is "two hundred sixty million, five hundred forty-four thousand, four hundred twenty".