12726380 has 12 divisors (see below), whose sum is σ = 26725440. Its totient is φ = 5090544.

The previous prime is 12726367. The next prime is 12726391. The reversal of 12726380 is 8362721.

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 3 ways as a sum of consecutive naturals, for example, 318140 + ... + 318179.

It is an arithmetic number, because the mean of its divisors is an integer number (2227120).

Almost surely, 2^12726380 is an apocalyptic number.

12726380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12726380 is an abundant number, since it is smaller than the sum of its proper divisors (13999060).

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

12726380 is a wasteful number, since it uses less digits than its factorization.

12726380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636328 (or 636326 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12726380 is about 3567.4052194838. The cubic root of 12726380 is about 233.4720852751.

The spelling of 12726380 in words is "twelve million, seven hundred twenty-six thousand, three hundred eighty".