12581472 has 48 divisors (see below), whose sum is σ = 33445440. Its totient is φ = 4140672.

The previous prime is 12581467. The next prime is 12581473. The reversal of 12581472 is 27418521.

It is a tau number, because it is divible by the number of its divisors (48).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12581473) 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, 7179 + ... + 8757.

It is an arithmetic number, because the mean of its divisors is an integer number (696780).

Almost surely, 2^12581472 is an apocalyptic number.

12581472 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 12581472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16722720).

12581472 is an abundant number, since it is smaller than the sum of its proper divisors (20863968).

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

12581472 is a wasteful number, since it uses less digits than its factorization.

12581472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675 (or 1667 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 12581472 is about 3547.0370733896. The cubic root of 12581472 is about 232.5825628849.

Adding to 12581472 its reverse (27418521), we get a palindrome (39999993).

The spelling of 12581472 in words is "twelve million, five hundred eighty-one thousand, four hundred seventy-two".