12338728 has 16 divisors (see below), whose sum is σ = 23201280. Its totient is φ = 6151728.

The previous prime is 12338707. The next prime is 12338731. The reversal of 12338728 is 82783321.

It is a junction number, because it is equal to n+sod(n) for n = 12338693 and 12338702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051 + ... + 5077.

It is an arithmetic number, because the mean of its divisors is an integer number (1450080).

Almost surely, 2^12338728 is an apocalyptic number.

It is an amenable number.

12338728 is a deficient number, since it is larger than the sum of its proper divisors (10862552).

12338728 is a wasteful number, since it uses less digits than its factorization.

12338728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416 (or 4412 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 12338728 is about 3512.6525589645. The cubic root of 12338728 is about 231.0770405753.

The spelling of 12338728 in words is "twelve million, three hundred thirty-eight thousand, seven hundred twenty-eight".