12557832 has 64 divisors (see below), whose sum is σ = 37998720. Its totient is φ = 3376128.

The previous prime is 12557819. The next prime is 12557851. The reversal of 12557832 is 23875521.

It is a junction number, because it is equal to n+sod(n) for n = 12557793 and 12557802.

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 15 ways as a sum of consecutive naturals, for example, 658 + ... + 5054.

It is an arithmetic number, because the mean of its divisors is an integer number (593730).

Almost surely, 2^12557832 is an apocalyptic number.

12557832 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 12557832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18999360).

12557832 is an abundant number, since it is smaller than the sum of its proper divisors (25440888).

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

12557832 is a wasteful number, since it uses less digits than its factorization.

12557832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430 (or 4426 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 12557832 is about 3543.7031478384. The cubic root of 12557832 is about 232.4368009518.

The spelling of 12557832 in words is "twelve million, five hundred fifty-seven thousand, eight hundred thirty-two".