12747988 has 12 divisors (see below), whose sum is σ = 24337152. Its totient is φ = 5794520.

The previous prime is 12747983. The next prime is 12748013. The reversal of 12747988 is 88974721.

It is a super-2 number, since 2×12747988² = 325022396096288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12747983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144820 + ... + 144907.

It is an arithmetic number, because the mean of its divisors is an integer number (2028096).

Almost surely, 2^12747988 is an apocalyptic number.

It is an amenable number.

12747988 is a deficient number, since it is larger than the sum of its proper divisors (11589164).

12747988 is a wasteful number, since it uses less digits than its factorization.

12747988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289742 (or 289740 counting only the distinct ones).

The product of its digits is 225792, while the sum is 46.

The square root of 12747988 is about 3570.4324668029. The cubic root of 12747988 is about 233.6041472414.

The spelling of 12747988 in words is "twelve million, seven hundred forty-seven thousand, nine hundred eighty-eight".