12345408 has 42 divisors (see below), whose sum is σ = 35387534. Its totient is φ = 4114944.

The previous prime is 12345397. The next prime is 12345413. The reversal of 12345408 is 80454321.

It can be written as a sum of positive squares in only one way, i.e., 7884864 + 4460544 = 2808^2 + 2112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10141 + ... + 11292.

Almost surely, 2^12345408 is an apocalyptic number.

12345408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12345408 is an abundant number, since it is smaller than the sum of its proper divisors (23042126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12345408 is a wasteful number, since it uses less digits than its factorization.

12345408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21451 (or 21438 counting only the distinct ones).

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

The square root of 12345408 is about 3513.6032786870. The cubic root of 12345408 is about 231.1187335860.

Adding to 12345408 its reverse (80454321), we get a palindrome (92799729).

The spelling of 12345408 in words is "twelve million, three hundred forty-five thousand, four hundred eight".