1280560 has 20 divisors (see below), whose sum is σ = 2977488. Its totient is φ = 512192.

The previous prime is 1280549. The next prime is 1280561. The reversal of 1280560 is 650821.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1280561) 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, 7924 + ... + 8083.

2^1280560 is an apocalyptic number.

1280560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280560 is an abundant number, since it is smaller than the sum of its proper divisors (1696928).

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

1280560 is a wasteful number, since it uses less digits than its factorization.

1280560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16020 (or 16014 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1280560 is about 1131.6183102089. The cubic root of 1280560 is about 108.5925364580.

The spelling of 1280560 in words is "one million, two hundred eighty thousand, five hundred sixty".