1285760 has 96 divisors (see below), whose sum is σ = 3662820. Its totient is φ = 430080.

The previous prime is 1285759. The next prime is 1285763. The reversal of 1285760 is 675821.

It can be written as a sum of positive squares in 2 ways, for example, as 1132096 + 153664 = 1064^2 + 392^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31340 + ... + 31380.

2^1285760 is an apocalyptic number.

1285760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1831410).

1285760 is an abundant number, since it is smaller than the sum of its proper divisors (2377060).

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

1285760 is an equidigital number, since it uses as much as digits as its factorization.

1285760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1285760 is about 1133.9135769537. The cubic root of 1285760 is about 108.7393260321.

The spelling of 1285760 in words is "one million, two hundred eighty-five thousand, seven hundred sixty".