12320756 has 18 divisors (see below), whose sum is σ = 25081938. Its totient is φ = 5280240.

The previous prime is 12320753. The next prime is 12320773. The reversal of 12320756 is 65702321.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 70756 = 3500^2 + 266^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31235 + ... + 31626.

It is an arithmetic number, because the mean of its divisors is an integer number (1393441).

Almost surely, 2^12320756 is an apocalyptic number.

It is an amenable number.

12320756 is an abundant number, since it is smaller than the sum of its proper divisors (12761182).

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

12320756 is a wasteful number, since it uses less digits than its factorization.

12320756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62879 (or 62870 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 12320756 is about 3510.0934460495. The cubic root of 12320756 is about 230.9647941449.

The spelling of 12320756 in words is "twelve million, three hundred twenty thousand, seven hundred fifty-six".