12648558 has 32 divisors (see below), whose sum is σ = 28127232. Its totient is φ = 3765600.

The previous prime is 12648539. The next prime is 12648569. The reversal of 12648558 is 85584621.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

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, 198 + ... + 5033.

It is an arithmetic number, because the mean of its divisors is an integer number (878976).

Almost surely, 2^12648558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12648558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14063616).

12648558 is an abundant number, since it is smaller than the sum of its proper divisors (15478674).

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

12648558 is a wasteful number, since it uses less digits than its factorization.

12648558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280.

The product of its digits is 76800, while the sum is 39.

The square root of 12648558 is about 3556.4811260570. The cubic root of 12648558 is about 232.9952168580.

It can be divided in two parts, 126 and 48558, that added together give a palindrome (48684).

The spelling of 12648558 in words is "twelve million, six hundred forty-eight thousand, five hundred fifty-eight".