12822782728 has 32 divisors (see below), whose sum is σ = 27506338560. Its totient is φ = 5489688960.

The previous prime is 12822782701. The next prime is 12822782771. The reversal of 12822782728 is 82728722821.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66768 + ... + 173503.

It is an arithmetic number, because the mean of its divisors is an integer number (859573080).

Almost surely, 2^12822782728 is an apocalyptic number.

It is an amenable number.

12822782728 is an abundant number, since it is smaller than the sum of its proper divisors (14683555832).

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

12822782728 is a wasteful number, since it uses less digits than its factorization.

12822782728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241237 (or 241233 counting only the distinct ones).

The product of its digits is 802816, while the sum is 49.

The spelling of 12822782728 in words is "twelve billion, eight hundred twenty-two million, seven hundred eighty-two thousand, seven hundred twenty-eight".