12638548 has 54 divisors (see below), whose sum is σ = 26204906. Its totient is φ = 5300736.

The previous prime is 12638543. The next prime is 12638551. The reversal of 12638548 is 84583621.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 887364 + 11751184 = 942^2 + 3428^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638543) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 435798 + ... + 435826.

Almost surely, 2^12638548 is an apocalyptic number.

It is an amenable number.

12638548 is an abundant number, since it is smaller than the sum of its proper divisors (13566358).

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

12638548 is a wasteful number, since it uses less digits than its factorization.

12638548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 61 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 12638548 is about 3555.0735576075. The cubic root of 12638548 is about 232.9337369211.

The spelling of 12638548 in words is "twelve million, six hundred thirty-eight thousand, five hundred forty-eight".