12728752 has 20 divisors (see below), whose sum is σ = 25734960. Its totient is φ = 6087488.

The previous prime is 12728747. The next prime is 12728759. The reversal of 12728752 is 25782721.

It is a super-2 number, since 2×12728752² = 324042254955008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12728759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16927 + ... + 17662.

It is an arithmetic number, because the mean of its divisors is an integer number (1286748).

Almost surely, 2^12728752 is an apocalyptic number.

It is an amenable number.

12728752 is an abundant number, since it is smaller than the sum of its proper divisors (13006208).

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

12728752 is a wasteful number, since it uses less digits than its factorization.

12728752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34620 (or 34614 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The square root of 12728752 is about 3567.7376585169. The cubic root of 12728752 is about 233.4865895668.

The spelling of 12728752 in words is "twelve million, seven hundred twenty-eight thousand, seven hundred fifty-two".