1260256880 has 20 divisors (see below), whose sum is σ = 2930097432. Its totient is φ = 504102720.

The previous prime is 1260256859. The next prime is 1260256897. The reversal of 1260256880 is 886520621.

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

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 7876526 + ... + 7876685.

Almost surely, 2^1260256880 is an apocalyptic number.

1260256880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260256880 is an abundant number, since it is smaller than the sum of its proper divisors (1669840552).

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

1260256880 is a wasteful number, since it uses less digits than its factorization.

1260256880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15753224 (or 15753218 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1260256880 is about 35500.0969012762. The cubic root of 1260256880 is about 1080.1556931463.

The spelling of 1260256880 in words is "one billion, two hundred sixty million, two hundred fifty-six thousand, eight hundred eighty".