12319845 has 16 divisors (see below), whose sum is σ = 19983552. Its totient is φ = 6480000.

The previous prime is 12319843. The next prime is 12319859. The reversal of 12319845 is 54891321.

It is not a de Polignac number, because 12319845 - 2¹ = 12319843 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12319841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4531 + ... + 6720.

It is an arithmetic number, because the mean of its divisors is an integer number (1248972).

Almost surely, 2^12319845 is an apocalyptic number.

12319845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12319845 is a deficient number, since it is larger than the sum of its proper divisors (7663707).

12319845 is a wasteful number, since it uses less digits than its factorization.

12319845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332.

The product of its digits is 8640, while the sum is 33.

The square root of 12319845 is about 3509.9636750257. The cubic root of 12319845 is about 230.9591014717.

The spelling of 12319845 in words is "twelve million, three hundred nineteen thousand, eight hundred forty-five".