1285560 has 48 divisors (see below), whose sum is σ = 4179240. Its totient is φ = 342720.

The previous prime is 1285553. The next prime is 1285607. The reversal of 1285560 is 655821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1426 + ... + 2145.

2^1285560 is an apocalyptic number.

1285560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1285560 is an abundant number, since it is smaller than the sum of its proper divisors (2893680).

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

1285560 is a wasteful number, since it uses less digits than its factorization.

1285560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588 (or 3581 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1285560 is about 1133.8253833814. The cubic root of 1285560 is about 108.7336876048.

The spelling of 1285560 in words is "one million, two hundred eighty-five thousand, five hundred sixty".