260560440 has 144 divisors (see below), whose sum is σ = 985144680. Its totient is φ = 59552640.

The previous prime is 260560397. The next prime is 260560457. The reversal of 260560440 is 44065062.

It is a happy number.

260560440 is a `hidden beast` number, since 2 + 60 + 560 + 4 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10255 + ... + 25025.

Almost surely, 2^260560440 is an apocalyptic number.

260560440 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 260560440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492572340).

260560440 is an abundant number, since it is smaller than the sum of its proper divisors (724584240).

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

260560440 is a wasteful number, since it uses less digits than its factorization.

260560440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14802 (or 14788 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 260560440 is about 16141.8846483303. The cubic root of 260560440 is about 638.7086918930.

The spelling of 260560440 in words is "two hundred sixty million, five hundred sixty thousand, four hundred forty".