12926224720 has 160 divisors (see below), whose sum is σ = 32379847200. Its totient is φ = 4781703168.

The previous prime is 12926224691. The next prime is 12926224739. The reversal of 12926224720 is 2742262921.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 4834142784 + 8092081936 = 69528^2 + 89956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12926224720.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 32559562 + ... + 32559958.

It is an arithmetic number, because the mean of its divisors is an integer number (202374045).

Almost surely, 2^12926224720 is an apocalyptic number.

12926224720 is a gapful number since it is divisible by the number (10) 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 12926224720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16189923600).

12926224720 is an abundant number, since it is smaller than the sum of its proper divisors (19453622480).

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

12926224720 is a wasteful number, since it uses less digits than its factorization.

12926224720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 12926224720 in words is "twelve billion, nine hundred twenty-six million, two hundred twenty-four thousand, seven hundred twenty".