12855880 has 16 divisors (see below), whose sum is σ = 28925820. Its totient is φ = 5142336.

The previous prime is 12855877. The next prime is 12855883. The reversal of 12855880 is 8855821.

It is an interprime number because it is at equal distance from previous prime (12855877) and next prime (12855883).

It can be written as a sum of positive squares in 2 ways, for example, as 12013156 + 842724 = 3466^2 + 918^2 .

It is not an unprimeable number, because it can be changed into a prime (12855883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160659 + ... + 160738.

Almost surely, 2^12855880 is an apocalyptic number.

12855880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12855880 is an abundant number, since it is smaller than the sum of its proper divisors (16069940).

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

12855880 is a wasteful number, since it uses less digits than its factorization.

12855880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321408 (or 321404 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 12855880 is about 3585.5097266637. The cubic root of 12855880 is about 234.2613292940.

The spelling of 12855880 in words is "twelve million, eight hundred fifty-five thousand, eight hundred eighty".