12721282 has 24 divisors (see below), whose sum is σ = 22325760. Its totient is φ = 5420520.

The previous prime is 12721273. The next prime is 12721333. The reversal of 12721282 is 28212721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26319 + ... + 26797.

It is an arithmetic number, because the mean of its divisors is an integer number (930240).

Almost surely, 2^12721282 is an apocalyptic number.

12721282 is a deficient number, since it is larger than the sum of its proper divisors (9604478).

12721282 is a wasteful number, since it uses less digits than its factorization.

12721282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 759 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 12721282 is about 3566.6906229725. The cubic root of 12721282 is about 233.4409059542.

The spelling of 12721282 in words is "twelve million, seven hundred twenty-one thousand, two hundred eighty-two".