12740722 has 4 divisors (see below), whose sum is σ = 19111086. Its totient is φ = 6370360.

The previous prime is 12740719. The next prime is 12740747. The reversal of 12740722 is 22704721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22704721 = 13 ⋅1746517.

It can be written as a sum of positive squares in only one way, i.e., 8696601 + 4044121 = 2949^2 + 2011^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3185179 + ... + 3185182.

Almost surely, 2^12740722 is an apocalyptic number.

12740722 is a deficient number, since it is larger than the sum of its proper divisors (6370364).

12740722 is an equidigital number, since it uses as much as digits as its factorization.

12740722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6370363.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 12740722 is about 3569.4147979746. The cubic root of 12740722 is about 233.5597561756.

The spelling of 12740722 in words is "twelve million, seven hundred forty thousand, seven hundred twenty-two".