12840548 has 36 divisors (see below), whose sum is σ = 26353152. Its totient is φ = 5474280.

The previous prime is 12840547. The next prime is 12840551. The reversal of 12840548 is 84504821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12840547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67133 + ... + 67323.

It is an arithmetic number, because the mean of its divisors is an integer number (732032).

Almost surely, 2^12840548 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 12840548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13176576).

12840548 is an abundant number, since it is smaller than the sum of its proper divisors (13512604).

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

12840548 is an frugal number, since it uses more digits than its factorization.

12840548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 12840548 is about 3583.3710385613. The cubic root of 12840548 is about 234.1681650902.

The spelling of 12840548 in words is "twelve million, eight hundred forty thousand, five hundred forty-eight".