12727128 has 16 divisors (see below), whose sum is σ = 31817880. Its totient is φ = 4242368.

The previous prime is 12727123. The next prime is 12727129. The reversal of 12727128 is 82172721.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12727095 and 12727104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12727123) 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, 265125 + ... + 265172.

Almost surely, 2^12727128 is an apocalyptic number.

It is an amenable number.

12727128 is an abundant number, since it is smaller than the sum of its proper divisors (19090752).

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

12727128 is a wasteful number, since it uses less digits than its factorization.

12727128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530306 (or 530302 counting only the distinct ones).

The product of its digits is 3136, while the sum is 30.

The square root of 12727128 is about 3567.5100560475. The cubic root of 12727128 is about 233.4766593357.

Adding to 12727128 its reverse (82172721), we get a palindrome (94899849).

The spelling of 12727128 in words is "twelve million, seven hundred twenty-seven thousand, one hundred twenty-eight".