1285444 has 12 divisors (see below), whose sum is σ = 2273404. Its totient is φ = 635904.

The previous prime is 1285441. The next prime is 1285451. The reversal of 1285444 is 4445821.

It can be written as a sum of positive squares in 2 ways, for example, as 925444 + 360000 = 962^2 + 600^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1285441) 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, 1269 + ... + 2044.

2^1285444 is an apocalyptic number.

It is an amenable number.

1285444 is a deficient number, since it is larger than the sum of its proper divisors (987960).

1285444 is a wasteful number, since it uses less digits than its factorization.

1285444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414 (or 3412 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

The square root of 1285444 is about 1133.7742279660. The cubic root of 1285444 is about 108.7304170490.

The spelling of 1285444 in words is "one million, two hundred eighty-five thousand, four hundred forty-four".