12726280 has 96 divisors (see below), whose sum is σ = 34309440. Its totient is φ = 4233600.

The previous prime is 12726271. The next prime is 12726283. The reversal of 12726280 is 8262721.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12726283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84205 + ... + 84355.

It is an arithmetic number, because the mean of its divisors is an integer number (357390).

Almost surely, 2^12726280 is an apocalyptic number.

12726280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12726280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17154720).

12726280 is an abundant number, since it is smaller than the sum of its proper divisors (21583160).

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

12726280 is a wasteful number, since it uses less digits than its factorization.

12726280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 12726280 is about 3567.3912036669. The cubic root of 12726280 is about 233.4714737561.

The spelling of 12726280 in words is "twelve million, seven hundred twenty-six thousand, two hundred eighty".