12820022480 has 30 divisors (see below), whose sum is σ = 29808907026. Its totient is φ = 5127603904.

The previous prime is 12820022459. The next prime is 12820022497. The reversal of 12820022480 is 8422002821.

It can be written as a sum of positive squares in only one way, i.e., 10256017984 + 2564004496 = 101272^2 + 50636^2 .

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 5 ways as a sum of consecutive naturals, for example, 1006391 + ... + 1019049.

Almost surely, 2^12820022480 is an apocalyptic number.

12820022480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12820022480 is an abundant number, since it is smaller than the sum of its proper divisors (16988884546).

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

12820022480 is an frugal number, since it uses more digits than its factorization.

12820022480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25331 (or 12666 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The spelling of 12820022480 in words is "twelve billion, eight hundred twenty million, twenty-two thousand, four hundred eighty".