12628839432 has 64 divisors (see below), whose sum is σ = 34521062400. Its totient is φ = 3818168640.

The previous prime is 12628839407. The next prime is 12628839449. The reversal of 12628839432 is 23493882621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61413 + ... + 170379.

It is an arithmetic number, because the mean of its divisors is an integer number (539391600).

Almost surely, 2^12628839432 is an apocalyptic number.

12628839432 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 12628839432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17260531200).

12628839432 is an abundant number, since it is smaller than the sum of its proper divisors (21892222968).

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

12628839432 is a wasteful number, since it uses less digits than its factorization.

12628839432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109426 (or 109422 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The spelling of 12628839432 in words is "twelve billion, six hundred twenty-eight million, eight hundred thirty-nine thousand, four hundred thirty-two".