12392988 has 24 divisors (see below), whose sum is σ = 29623440. Its totient is φ = 4030080.

The previous prime is 12392981. The next prime is 12393001. The reversal of 12392988 is 88929321.

12392988 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12392981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12103 + ... + 13086.

It is an arithmetic number, because the mean of its divisors is an integer number (1234310).

Almost surely, 2^12392988 is an apocalyptic number.

It is an amenable number.

12392988 is an abundant number, since it is smaller than the sum of its proper divisors (17230452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12392988 is a wasteful number, since it uses less digits than its factorization.

12392988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25237 (or 25235 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 12392988 is about 3520.3675944424. The cubic root of 12392988 is about 231.4152684669.

The spelling of 12392988 in words is "twelve million, three hundred ninety-two thousand, nine hundred eighty-eight".