12916388 has 6 divisors (see below), whose sum is σ = 22603686. Its totient is φ = 6458192.

The previous prime is 12916373. The next prime is 12916417. The reversal of 12916388 is 88361921.

It can be written as a sum of positive squares in only one way, i.e., 12902464 + 13924 = 3592^2 + 118^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1614545 + ... + 1614552.

It is an arithmetic number, because the mean of its divisors is an integer number (3767281).

Almost surely, 2^12916388 is an apocalyptic number.

It is an amenable number.

12916388 is a deficient number, since it is larger than the sum of its proper divisors (9687298).

12916388 is a wasteful number, since it uses less digits than its factorization.

12916388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229101 (or 3229099 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 12916388 is about 3593.9376733605. The cubic root of 12916388 is about 234.6282821099.

The spelling of 12916388 in words is "twelve million, nine hundred sixteen thousand, three hundred eighty-eight".