1285288 has 16 divisors (see below), whose sum is σ = 2422080. Its totient is φ = 639408.

The previous prime is 1285283. The next prime is 1285289. The reversal of 1285288 is 8825821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1285283) 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, 2545 + ... + 3007.

It is an arithmetic number, because the mean of its divisors is an integer number (151380).

2^1285288 is an apocalyptic number.

It is an amenable number.

1285288 is a deficient number, since it is larger than the sum of its proper divisors (1136792).

1285288 is a wasteful number, since it uses less digits than its factorization.

1285288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 812 counting only the distinct ones).

The product of its digits is 10240, while the sum is 34.

The square root of 1285288 is about 1133.7054291129. The cubic root of 1285288 is about 108.7260184051.

The spelling of 1285288 in words is "one million, two hundred eighty-five thousand, two hundred eighty-eight".