1285479832 has 32 divisors (see below), whose sum is σ = 2966493600. Its totient is φ = 508541184.

The previous prime is 1285479817. The next prime is 1285479859. The reversal of 1285479832 is 2389745821.

It is a super-3 number, since 3×1285479832³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882157 + ... + 883612.

It is an arithmetic number, because the mean of its divisors is an integer number (92702925).

Almost surely, 2^1285479832 is an apocalyptic number.

It is an amenable number.

1285479832 is an abundant number, since it is smaller than the sum of its proper divisors (1681013768).

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

1285479832 is a wasteful number, since it uses less digits than its factorization.

1285479832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765795 (or 1765791 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The square root of 1285479832 is about 35853.5888301297. The cubic root of 1285479832 is about 1087.3142733341.

The spelling of 1285479832 in words is "one billion, two hundred eighty-five million, four hundred seventy-nine thousand, eight hundred thirty-two".