12724407 has 12 divisors (see below), whose sum is σ = 18639504. Its totient is φ = 8363040.

The previous prime is 12724351. The next prime is 12724421. The reversal of 12724407 is 70442721.

It is a happy number.

It is not a de Polignac number, because 12724407 - 2⁶ = 12724343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12724447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9318 + ... + 10595.

It is an arithmetic number, because the mean of its divisors is an integer number (1553292).

Almost surely, 2^12724407 is an apocalyptic number.

12724407 is a deficient number, since it is larger than the sum of its proper divisors (5915097).

12724407 is a wasteful number, since it uses less digits than its factorization.

12724407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19990 (or 19987 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 12724407 is about 3567.1286772417. The cubic root of 12724407 is about 233.4600194132.

It can be divided in two parts, 12724 and 407, that added together give a palindrome (13131).

The spelling of 12724407 in words is "twelve million, seven hundred twenty-four thousand, four hundred seven".