1285272832 has 36 divisors (see below), whose sum is σ = 2567918080. Its totient is φ = 642037248.

The previous prime is 1285272829. The next prime is 1285272869. The reversal of 1285272832 is 2382725821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424219 + ... + 427237.

Almost surely, 2^1285272832 is an apocalyptic number.

It is an amenable number.

1285272832 is a deficient number, since it is larger than the sum of its proper divisors (1282645248).

1285272832 is an equidigital number, since it uses as much as digits as its factorization.

1285272832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698 (or 4684 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 1285272832 is about 35850.7019736016. The cubic root of 1285272832 is about 1087.2559070258.

The spelling of 1285272832 in words is "one billion, two hundred eighty-five million, two hundred seventy-two thousand, eight hundred thirty-two".