1285832 has 16 divisors (see below), whose sum is σ = 2437260. Its totient is φ = 635904.

The previous prime is 1285813. The next prime is 1285841. The reversal of 1285832 is 2385821.

It can be written as a sum of positive squares in 2 ways, for example, as 1267876 + 17956 = 1126^2 + 134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1285795 and 1285804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53 + ... + 1604.

2^1285832 is an apocalyptic number.

It is an amenable number.

1285832 is a deficient number, since it is larger than the sum of its proper divisors (1151428).

1285832 is a wasteful number, since it uses less digits than its factorization.

1285832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1756 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 1285832 is about 1133.9453249606. The cubic root of 1285832 is about 108.7413557228.

It can be divided in two parts, 128 and 5832, that multiplied together give a square (746496 = 864²).

The spelling of 1285832 in words is "one million, two hundred eighty-five thousand, eight hundred thirty-two".