12722736 has 40 divisors (see below), whose sum is σ = 35397040. Its totient is φ = 3914496.

The previous prime is 12722729. The next prime is 12722737. The reversal of 12722736 is 63722721.

It is a super-2 number, since 2×12722736² = 323736022651392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12722737) 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 7 ways as a sum of consecutive naturals, for example, 9571 + ... + 10818.

It is an arithmetic number, because the mean of its divisors is an integer number (884926).

Almost surely, 2^12722736 is an apocalyptic number.

12722736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12722736 is an abundant number, since it is smaller than the sum of its proper divisors (22674304).

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

12722736 is a wasteful number, since it uses less digits than its factorization.

12722736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20413 (or 20407 counting only the distinct ones).

The product of its digits is 7056, while the sum is 30.

The square root of 12722736 is about 3566.8944475552. The cubic root of 12722736 is about 233.4497994537.

The spelling of 12722736 in words is "twelve million, seven hundred twenty-two thousand, seven hundred thirty-six".