12906280 has 32 divisors (see below), whose sum is σ = 29161440. Its totient is φ = 5140800.

The previous prime is 12906269. The next prime is 12906287. The reversal of 12906280 is 8260921.

It is a happy number.

12906280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (12906287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11755 + ... + 12805.

It is an arithmetic number, because the mean of its divisors is an integer number (911295).

Almost surely, 2^12906280 is an apocalyptic number.

12906280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12906280 is an abundant number, since it is smaller than the sum of its proper divisors (16255160).

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

12906280 is a wasteful number, since it uses less digits than its factorization.

12906280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369 (or 1365 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12906280 is about 3592.5311411316. The cubic root of 12906280 is about 234.5670616511.

The spelling of 12906280 in words is "twelve million, nine hundred six thousand, two hundred eighty".