12987548 has 72 divisors (see below), whose sum is σ = 28651392. Its totient is φ = 5122656.

The previous prime is 12987547. The next prime is 12987551. The reversal of 12987548 is 84578921.

It is a junction number, because it is equal to n+sod(n) for n = 12987499 and 12987508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12987547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193811 + ... + 193877.

It is an arithmetic number, because the mean of its divisors is an integer number (397936).

Almost surely, 2^12987548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12987548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14325696).

12987548 is an abundant number, since it is smaller than the sum of its proper divisors (15663844).

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

12987548 is a wasteful number, since it uses less digits than its factorization.

12987548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 142 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The square root of 12987548 is about 3603.8240800572. The cubic root of 12987548 is about 235.0583708933.

The spelling of 12987548 in words is "twelve million, nine hundred eighty-seven thousand, five hundred forty-eight".