12722756 has 12 divisors (see below), whose sum is σ = 22685292. Its totient is φ = 6241248.

The previous prime is 12722747. The next prime is 12722767. The reversal of 12722756 is 65722721.

12722756 = T₂₃₅ + T₂₃₆ + ... + T₄₄₆.

It can be written as a sum of positive squares in 2 ways, for example, as 9424900 + 3297856 = 3070^2 + 1816^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29795 + ... + 30218.

It is an arithmetic number, because the mean of its divisors is an integer number (1890441).

Almost surely, 2^12722756 is an apocalyptic number.

It is an amenable number.

12722756 is a deficient number, since it is larger than the sum of its proper divisors (9962536).

12722756 is a wasteful number, since it uses less digits than its factorization.

12722756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60070 (or 60068 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 12722756 is about 3566.8972511134. The cubic root of 12722756 is about 233.4499217805.

The spelling of 12722756 in words is "twelve million, seven hundred twenty-two thousand, seven hundred fifty-six".