12638576 has 40 divisors (see below), whose sum is σ = 25665024. Its totient is φ = 6022080.

The previous prime is 12638551. The next prime is 12638581. The reversal of 12638576 is 67583621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41015 + ... + 41321.

Almost surely, 2^12638576 is an apocalyptic number.

12638576 is a gapful number since it is divisible by the number (16) 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 12638576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12832512).

12638576 is an abundant number, since it is smaller than the sum of its proper divisors (13026448).

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

12638576 is a wasteful number, since it uses less digits than its factorization.

12638576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 423 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 12638576 is about 3555.0774956392. The cubic root of 12638576 is about 232.9339089382.

The spelling of 12638576 in words is "twelve million, six hundred thirty-eight thousand, five hundred seventy-six".