12721300 has 36 divisors (see below), whose sum is σ = 28810656. Its totient is φ = 4866400.

The previous prime is 12721273. The next prime is 12721333. The reversal of 12721300 is 312721.

It is a happy number.

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, 466 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (800296).

Almost surely, 2^12721300 is an apocalyptic number.

12721300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12721300 is an abundant number, since it is smaller than the sum of its proper divisors (16089356).

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

12721300 is a wasteful number, since it uses less digits than its factorization.

12721300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568 (or 5561 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 12721300 is about 3566.6931463192. The cubic root of 12721300 is about 233.4410160567.

The spelling of 12721300 in words is "twelve million, seven hundred twenty-one thousand, three hundred".