12747808 has 12 divisors (see below), whose sum is σ = 25097310. Its totient is φ = 6373888.

The previous prime is 12747799. The next prime is 12747809. The reversal of 12747808 is 80874721.

It can be written as a sum of positive squares in only one way, i.e., 8133904 + 4613904 = 2852^2 + 2148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12747809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199153 + ... + 199216.

Almost surely, 2^12747808 is an apocalyptic number.

It is an amenable number.

12747808 is a deficient number, since it is larger than the sum of its proper divisors (12349502).

12747808 is an equidigital number, since it uses as much as digits as its factorization.

12747808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398379 (or 398371 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 12747808 is about 3570.4072596834. The cubic root of 12747808 is about 233.6030477491.

The spelling of 12747808 in words is "twelve million, seven hundred forty-seven thousand, eight hundred eight".