260257520 has 20 divisors (see below), whose sum is σ = 605098920. Its totient is φ = 104102976.

The previous prime is 260257477. The next prime is 260257523. The reversal of 260257520 is 25752062.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260257523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1626530 + ... + 1626689.

It is an arithmetic number, because the mean of its divisors is an integer number (30254946).

Almost surely, 2^260257520 is an apocalyptic number.

260257520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260257520 is an abundant number, since it is smaller than the sum of its proper divisors (344841400).

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

260257520 is a wasteful number, since it uses less digits than its factorization.

260257520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253232 (or 3253226 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 260257520 is about 16132.4988764915. The cubic root of 260257520 is about 638.4610811882.

The spelling of 260257520 in words is "two hundred sixty million, two hundred fifty-seven thousand, five hundred twenty".