12808240 has 40 divisors (see below), whose sum is σ = 31078368. Its totient is φ = 4899840.

The previous prime is 12808219. The next prime is 12808241. The reversal of 12808240 is 4280821.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (12808241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641 + ... + 5320.

Almost surely, 2^12808240 is an apocalyptic number.

12808240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12808240 is an abundant number, since it is smaller than the sum of its proper divisors (18270128).

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

12808240 is a wasteful number, since it uses less digits than its factorization.

12808240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997 (or 6991 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 12808240 is about 3578.8601537361. The cubic root of 12808240 is about 233.9716039276.

The spelling of 12808240 in words is "twelve million, eight hundred eight thousand, two hundred forty".