12919888 has 10 divisors (see below), whose sum is σ = 25032314. Its totient is φ = 6459936.

The previous prime is 12919883. The next prime is 12919889. The reversal of 12919888 is 88891921.

It can be written as a sum of positive squares in only one way, i.e., 12902464 + 17424 = 3592^2 + 132^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12919883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403731 + ... + 403762.

Almost surely, 2^12919888 is an apocalyptic number.

It is an amenable number.

12919888 is a deficient number, since it is larger than the sum of its proper divisors (12112426).

12919888 is an equidigital number, since it uses as much as digits as its factorization.

12919888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807501 (or 807495 counting only the distinct ones).

The product of its digits is 82944, while the sum is 46.

The square root of 12919888 is about 3594.4245714718. The cubic root of 12919888 is about 234.6494728851.

It can be divided in two parts, 129198 and 88, that added together give a triangular number (129286 = T₅₀₈).

The spelling of 12919888 in words is "twelve million, nine hundred nineteen thousand, eight hundred eighty-eight".