12881592 has 80 divisors (see below), whose sum is σ = 36619440. Its totient is φ = 4230144.

The previous prime is 12881581. The next prime is 12881599. The reversal of 12881592 is 29518821.

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 (12881599) 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 19 ways as a sum of consecutive naturals, for example, 66648 + ... + 66840.

It is an arithmetic number, because the mean of its divisors is an integer number (457743).

Almost surely, 2^12881592 is an apocalyptic number.

12881592 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 12881592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18309720).

12881592 is an abundant number, since it is smaller than the sum of its proper divisors (23737848).

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

12881592 is a wasteful number, since it uses less digits than its factorization.

12881592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 301 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 12881592 is about 3589.0934788606. The cubic root of 12881592 is about 234.4174009687.

The spelling of 12881592 in words is "twelve million, eight hundred eighty-one thousand, five hundred ninety-two".