12881808 has 40 divisors (see below), whose sum is σ = 36976800. Its totient is φ = 4293792.

The previous prime is 12881789. The next prime is 12881839. The reversal of 12881808 is 80818821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14478 + ... + 15341.

It is an arithmetic number, because the mean of its divisors is an integer number (924420).

Almost surely, 2^12881808 is an apocalyptic number.

12881808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12881808 is an abundant number, since it is smaller than the sum of its proper divisors (24094992).

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

12881808 is a wasteful number, since it uses less digits than its factorization.

12881808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29836 (or 29824 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The square root of 12881808 is about 3589.1235698984. The cubic root of 12881808 is about 234.4187112073.

It can be divided in two parts, 12881 and 808, that added together give a square (13689 = 117²).

The spelling of 12881808 in words is "twelve million, eight hundred eighty-one thousand, eight hundred eight".