12728452 has 12 divisors (see below), whose sum is σ = 24299856. Its totient is φ = 5785640.

The previous prime is 12728447. The next prime is 12728479. The reversal of 12728452 is 25482721.

It is a happy number.

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, 144598 + ... + 144685.

It is an arithmetic number, because the mean of its divisors is an integer number (2024988).

Almost surely, 2^12728452 is an apocalyptic number.

It is an amenable number.

12728452 is a deficient number, since it is larger than the sum of its proper divisors (11571404).

12728452 is a wasteful number, since it uses less digits than its factorization.

12728452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289298 (or 289296 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 12728452 is about 3567.6956148192. The cubic root of 12728452 is about 233.4847552281.

The spelling of 12728452 in words is "twelve million, seven hundred twenty-eight thousand, four hundred fifty-two".