1285768 has 32 divisors (see below), whose sum is σ = 2772000. Its totient is φ = 552960.

The previous prime is 1285763. The next prime is 1285777. The reversal of 1285768 is 8675821.

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 7 ways as a sum of consecutive naturals, for example, 1288 + ... + 2056.

It is an arithmetic number, because the mean of its divisors is an integer number (86625).

2^1285768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386000).

1285768 is an abundant number, since it is smaller than the sum of its proper divisors (1486232).

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

1285768 is a wasteful number, since it uses less digits than its factorization.

1285768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 801 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 1285768 is about 1133.9171045539. The cubic root of 1285768 is about 108.7395515571.

The spelling of 1285768 in words is "one million, two hundred eighty-five thousand, seven hundred sixty-eight".