12372805 has 4 divisors (see below), whose sum is σ = 14847372. Its totient is φ = 9898240.

The previous prime is 12372793. The next prime is 12372809. The reversal of 12372805 is 50827321.

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 7431076 + 4941729 = 2726^2 + 2223^2 .

It is not a de Polignac number, because 12372805 - 2¹³ = 12364613 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 (12372809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1237276 + ... + 1237285.

It is an arithmetic number, because the mean of its divisors is an integer number (3711843).

Almost surely, 2^12372805 is an apocalyptic number.

It is an amenable number.

12372805 is a deficient number, since it is larger than the sum of its proper divisors (2474567).

12372805 is an equidigital number, since it uses as much as digits as its factorization.

12372805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474566.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 12372805 is about 3517.4998223170. The cubic root of 12372805 is about 231.2895739432.

The spelling of 12372805 in words is "twelve million, three hundred seventy-two thousand, eight hundred five".