12557968 has 40 divisors (see below), whose sum is σ = 26027352. Its totient is φ = 5849088.

The previous prime is 12557953. The next prime is 12557969. The reversal of 12557968 is 86975521.

It can be written as a sum of positive squares in 4 ways, for example, as 2521744 + 10036224 = 1588^2 + 3168^2 .

It is not an unprimeable number, because it can be changed into a prime (12557969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37096 + ... + 37432.

Almost surely, 2^12557968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12557968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13013676).

12557968 is an abundant number, since it is smaller than the sum of its proper divisors (13469384).

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

12557968 is a wasteful number, since it uses less digits than its factorization.

12557968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 493 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 12557968 is about 3543.7223367527. The cubic root of 12557968 is about 232.4376400375.

The spelling of 12557968 in words is "twelve million, five hundred fifty-seven thousand, nine hundred sixty-eight".