12408345 has 12 divisors (see below), whose sum is σ = 21507876. Its totient is φ = 6617760.

The previous prime is 12408343. The next prime is 12408353. The reversal of 12408345 is 54380421.

It can be written as a sum of positive squares in 2 ways, for example, as 1774224 + 10634121 = 1332^2 + 3261^2 .

It is not a de Polignac number, because 12408345 - 2¹ = 12408343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12408343) 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 11 ways as a sum of consecutive naturals, for example, 137826 + ... + 137915.

It is an arithmetic number, because the mean of its divisors is an integer number (1792323).

Almost surely, 2^12408345 is an apocalyptic number.

12408345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12408345 is a deficient number, since it is larger than the sum of its proper divisors (9099531).

12408345 is a wasteful number, since it uses less digits than its factorization.

12408345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275752 (or 275749 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 12408345 is about 3522.5480834192. The cubic root of 12408345 is about 231.5108165126.

Adding to 12408345 its reverse (54380421), we get a palindrome (66788766).

The spelling of 12408345 in words is "twelve million, four hundred eight thousand, three hundred forty-five".