12072813 has 8 divisors (see below), whose sum is σ = 16317888. Its totient is φ = 7938144.

The previous prime is 12072803. The next prime is 12072869. The reversal of 12072813 is 31827021.

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

It is not a de Polignac number, because 12072813 - 2⁹ = 12072301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12072803) 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, 27345 + ... + 27782.

It is an arithmetic number, because the mean of its divisors is an integer number (2039736).

Almost surely, 2^12072813 is an apocalyptic number.

It is an amenable number.

12072813 is a deficient number, since it is larger than the sum of its proper divisors (4245075).

12072813 is an equidigital number, since it uses as much as digits as its factorization.

12072813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55203.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12072813 is about 3474.5953721261. The cubic root of 12072813 is about 229.4049710755.

Adding to 12072813 its reverse (31827021), we get a palindrome (43899834).

The spelling of 12072813 in words is "twelve million, seventy-two thousand, eight hundred thirteen".