1285232832 has 294 divisors, whose sum is σ = 4165995732. Its totient is φ = 393030144.

The previous prime is 1285232821. The next prime is 1285232857. The reversal of 1285232832 is 2382325821.

It is a happy number.

1285232832 is a `hidden beast` number, since 128 + 523 + 2 + 8 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 7884783 + ... + 7884945.

Almost surely, 2^1285232832 is an apocalyptic number.

1285232832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285232832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2082997866).

1285232832 is an abundant number, since it is smaller than the sum of its proper divisors (2880762900).

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

1285232832 is an equidigital number, since it uses as much as digits as its factorization.

1285232832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 181 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 1285232832 is about 35850.1441001288. The cubic root of 1285232832 is about 1087.2446277896.

The spelling of 1285232832 in words is "one billion, two hundred eighty-five million, two hundred thirty-two thousand, eight hundred thirty-two".