12722976 has 72 divisors (see below), whose sum is σ = 41356224. Its totient is φ = 3634560.

The previous prime is 12722971. The next prime is 12722977. The reversal of 12722976 is 67922721.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 12722976.

It is not an unprimeable number, because it can be changed into a prime (12722971) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1140 + ... + 5171.

It is an arithmetic number, because the mean of its divisors is an integer number (574392).

Almost surely, 2^12722976 is an apocalyptic number.

12722976 is a gapful number since it is divisible by the number (16) 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 12722976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20678112).

12722976 is an abundant number, since it is smaller than the sum of its proper divisors (28633248).

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

12722976 is a wasteful number, since it uses less digits than its factorization.

12722976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6334 (or 6323 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 12722976 is about 3566.9280901078. The cubic root of 12722976 is about 233.4512673665.

The spelling of 12722976 in words is "twelve million, seven hundred twenty-two thousand, nine hundred seventy-six".