12732722 has 4 divisors (see below), whose sum is σ = 19099086. Its totient is φ = 6366360.

The previous prime is 12732721. The next prime is 12732737. The reversal of 12732722 is 22723721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22723721 = 3361 ⋅6761.

It can be written as a sum of positive squares in only one way, i.e., 8934121 + 3798601 = 2989^2 + 1949^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12732691 and 12732700.

It is not an unprimeable number, because it can be changed into a prime (12732721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3183179 + ... + 3183182.

Almost surely, 2^12732722 is an apocalyptic number.

12732722 is a deficient number, since it is larger than the sum of its proper divisors (6366364).

12732722 is an equidigital number, since it uses as much as digits as its factorization.

12732722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366363.

The product of its digits is 2352, while the sum is 26.

The square root of 12732722 is about 3568.2939901303. The cubic root of 12732722 is about 233.5108612683.

Subtracting 12732722 from its reverse (22723721), we obtain a palindrome (9990999).

The spelling of 12732722 in words is "twelve million, seven hundred thirty-two thousand, seven hundred twenty-two".