12746420 has 12 divisors (see below), whose sum is σ = 26767524. Its totient is φ = 5098560.

The previous prime is 12746407. The next prime is 12746453. The reversal of 12746420 is 2464721.

It can be written as a sum of positive squares in 2 ways, for example, as 1281424 + 11464996 = 1132^2 + 3386^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12746420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318641 + ... + 318680.

It is an arithmetic number, because the mean of its divisors is an integer number (2230627).

Almost surely, 2^12746420 is an apocalyptic number.

12746420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12746420 is an abundant number, since it is smaller than the sum of its proper divisors (14021104).

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

12746420 is a wasteful number, since it uses less digits than its factorization.

12746420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637330 (or 637328 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 12746420 is about 3570.2128788071. The cubic root of 12746420 is about 233.5945690940.

The spelling of 12746420 in words is "twelve million, seven hundred forty-six thousand, four hundred twenty".