12722304 has 64 divisors (see below), whose sum is σ = 38629440. Its totient is φ = 3634176.

The previous prime is 12722293. The next prime is 12722317. The reversal of 12722304 is 40322721.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322 + ... + 5054.

It is an arithmetic number, because the mean of its divisors is an integer number (603585).

Almost surely, 2^12722304 is an apocalyptic number.

12722304 is a gapful number since it is divisible by the number (14) 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 12722304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19314720).

12722304 is an abundant number, since it is smaller than the sum of its proper divisors (25907136).

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

12722304 is an equidigital number, since it uses as much as digits as its factorization.

12722304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757 (or 4745 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 12722304 is about 3566.8338901609. The cubic root of 12722304 is about 233.4471571643.

The spelling of 12722304 in words is "twelve million, seven hundred twenty-two thousand, three hundred four".