1260865240 has 32 divisors (see below), whose sum is σ = 2897311680. Its totient is φ = 493614592.

The previous prime is 1260865237. The next prime is 1260865253. The reversal of 1260865240 is 425680621.

It is a junction number, because it is equal to n+sod(n) for n = 1260865196 and 1260865205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333457 + ... + 337216.

It is an arithmetic number, because the mean of its divisors is an integer number (90540990).

Almost surely, 2^1260865240 is an apocalyptic number.

1260865240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260865240 is an abundant number, since it is smaller than the sum of its proper divisors (1636446440).

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

1260865240 is a wasteful number, since it uses less digits than its factorization.

1260865240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670731 (or 670727 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1260865240 is about 35508.6642947887. The cubic root of 1260865240 is about 1080.3294719526.

The spelling of 1260865240 in words is "one billion, two hundred sixty million, eight hundred sixty-five thousand, two hundred forty".