12724813 has 8 divisors (see below), whose sum is σ = 13557600. Its totient is φ = 11908368.

The previous prime is 12724807. The next prime is 12724853. The reversal of 12724813 is 31842721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12724813 - 2¹³ = 12716621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12724853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2458 + ... + 5611.

It is an arithmetic number, because the mean of its divisors is an integer number (1694700).

Almost surely, 2^12724813 is an apocalyptic number.

It is an amenable number.

12724813 is a deficient number, since it is larger than the sum of its proper divisors (832787).

12724813 is an equidigital number, since it uses as much as digits as its factorization.

12724813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8171.

The product of its digits is 2688, while the sum is 28.

The square root of 12724813 is about 3567.1855853039. The cubic root of 12724813 is about 233.4625024041.

The spelling of 12724813 in words is "twelve million, seven hundred twenty-four thousand, eight hundred thirteen".