1281760 has 24 divisors (see below), whose sum is σ = 3028536. Its totient is φ = 512640.

The previous prime is 1281751. The next prime is 1281773. The reversal of 1281760 is 671821.

It is a Smith number, since the sum of its digits (25) 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, 3846 + ... + 4165.

It is an arithmetic number, because the mean of its divisors is an integer number (126189).

2^1281760 is an apocalyptic number.

1281760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1281760 is an abundant number, since it is smaller than the sum of its proper divisors (1746776).

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

1281760 is an equidigital number, since it uses as much as digits as its factorization.

1281760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026 (or 8018 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1281760 is about 1132.1484001667. The cubic root of 1281760 is about 108.6264461955.

The spelling of 1281760 in words is "one million, two hundred eighty-one thousand, seven hundred sixty".