12908778 has 8 divisors (see below), whose sum is σ = 25817568. Its totient is φ = 4302924.

The previous prime is 12908767. The next prime is 12908783. The reversal of 12908778 is 87780921.

It is a sphenic number, since it is the product of 3 distinct primes.

12908778 is an admirable 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, 1075726 + ... + 1075737.

It is an arithmetic number, because the mean of its divisors is an integer number (3227196).

Almost surely, 2^12908778 is an apocalyptic number.

12908778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12908778 is a wasteful number, since it uses less digits than its factorization.

12908778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151468.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 12908778 is about 3592.8787900512. The cubic root of 12908778 is about 234.5821940962.

The spelling of 12908778 in words is "twelve million, nine hundred eight thousand, seven hundred seventy-eight".