12655872 has 72 divisors (see below), whose sum is σ = 37446080. Its totient is φ = 4216320.

The previous prime is 12655859. The next prime is 12655873. The reversal of 12655872 is 27855621.

It is a happy number.

12655872 is a `hidden beast` number, since 12 + 65 + 587 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12655873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5997 + ... + 7827.

Almost surely, 2^12655872 is an apocalyptic number.

12655872 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 12655872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18723040).

12655872 is an abundant number, since it is smaller than the sum of its proper divisors (24790208).

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

12655872 is an equidigital number, since it uses as much as digits as its factorization.

12655872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856 (or 1836 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 12655872 is about 3557.5092410281. The cubic root of 12655872 is about 233.0401178565.

The spelling of 12655872 in words is "twelve million, six hundred fifty-five thousand, eight hundred seventy-two".