12706880 has 28 divisors (see below), whose sum is σ = 30259020. Its totient is φ = 5082624.

The previous prime is 12706847. The next prime is 12706937. The reversal of 12706880 is 8860721.

It can be written as a sum of positive squares in 2 ways, for example, as 8479744 + 4227136 = 2912^2 + 2056^2 .

It is a super-2 number, since 2×12706880² = 322929598668800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 19535 + ... + 20174.

Almost surely, 2^12706880 is an apocalyptic number.

12706880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12706880 is an abundant number, since it is smaller than the sum of its proper divisors (17552140).

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

12706880 is an equidigital number, since it uses as much as digits as its factorization.

12706880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39726 (or 39716 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 12706880 is about 3564.6710928219. The cubic root of 12706880 is about 233.3527784248.

The spelling of 12706880 in words is "twelve million, seven hundred six thousand, eight hundred eighty".