12988736 has 14 divisors (see below), whose sum is σ = 25774650. Its totient is φ = 6494336.

The previous prime is 12988711. The next prime is 12988747. The reversal of 12988736 is 63788921.

It can be written as a sum of positive squares in only one way, i.e., 8761600 + 4227136 = 2960^2 + 2056^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101411 + ... + 101538.

Almost surely, 2^12988736 is an apocalyptic number.

12988736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12988736 is a deficient number, since it is larger than the sum of its proper divisors (12785914).

12988736 is an equidigital number, since it uses as much as digits as its factorization.

12988736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202961 (or 202951 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 12988736 is about 3603.9889012038. The cubic root of 12988736 is about 235.0655377794.

The spelling of 12988736 in words is "twelve million, nine hundred eighty-eight thousand, seven hundred thirty-six".