1260780 has 24 divisors (see below), whose sum is σ = 3530352. Its totient is φ = 336192.

The previous prime is 1260769. The next prime is 1260797. The reversal of 1260780 is 870621.

It is a self number, because there is not a number n which added to its sum of digits gives 1260780.

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, 10447 + ... + 10566.

It is an arithmetic number, because the mean of its divisors is an integer number (147098).

2^1260780 is an apocalyptic number.

1260780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1260780 is an abundant number, since it is smaller than the sum of its proper divisors (2269572).

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

1260780 is a wasteful number, since it uses less digits than its factorization.

1260780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21025 (or 21023 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1260780 is about 1122.8446018929. The cubic root of 1260780 is about 108.0305126406.

The spelling of 1260780 in words is "one million, two hundred sixty thousand, seven hundred eighty".