12456345 has 24 divisors (see below), whose sum is σ = 21909888. Its totient is φ = 6038560.

The previous prime is 12456337. The next prime is 12456349. The reversal of 12456345 is 54365421.

12456345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12456345 - 2³ = 12456337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12456349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1617 + ... + 5246.

It is an arithmetic number, because the mean of its divisors is an integer number (912912).

Almost surely, 2^12456345 is an apocalyptic number.

12456345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12456345 is a deficient number, since it is larger than the sum of its proper divisors (9453543).

12456345 is a wasteful number, since it uses less digits than its factorization.

12456345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6893 (or 6882 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 12456345 is about 3529.3547568925. The cubic root of 12456345 is about 231.8089551394.

The spelling of 12456345 in words is "twelve million, four hundred fifty-six thousand, three hundred forty-five".