12721260 has 48 divisors (see below), whose sum is σ = 37497600. Its totient is φ = 3213504.

The previous prime is 12721217. The next prime is 12721271. The reversal of 12721260 is 6212721.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4440 + ... + 6719.

It is an arithmetic number, because the mean of its divisors is an integer number (781200).

Almost surely, 2^12721260 is an apocalyptic number.

12721260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12721260 is an abundant number, since it is smaller than the sum of its proper divisors (24776340).

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

12721260 is a wasteful number, since it uses less digits than its factorization.

12721260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190 (or 11188 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 12721260 is about 3566.6875388797. The cubic root of 12721260 is about 233.4407713844.

Adding to 12721260 its reverse (6212721), we get a palindrome (18933981).

The spelling of 12721260 in words is "twelve million, seven hundred twenty-one thousand, two hundred sixty".