12292813 has 4 divisors (see below), whose sum is σ = 13238428. Its totient is φ = 11347200.

The previous prime is 12292801. The next prime is 12292823. The reversal of 12292813 is 31829221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5391684 + 6901129 = 2322^2 + 2627^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12292813 is a prime.

It is a super-2 number, since 2×12292813² = 302226502905938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12292823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472788 + ... + 472813.

It is an arithmetic number, because the mean of its divisors is an integer number (3309607).

Almost surely, 2^12292813 is an apocalyptic number.

12292813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12292813 is a deficient number, since it is larger than the sum of its proper divisors (945615).

12292813 is an equidigital number, since it uses as much as digits as its factorization.

12292813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945614.

The product of its digits is 1728, while the sum is 28.

The square root of 12292813 is about 3506.1108082889. The cubic root of 12292813 is about 230.7900555594.

The spelling of 12292813 in words is "twelve million, two hundred ninety-two thousand, eight hundred thirteen".