12884978 has 8 divisors (see below), whose sum is σ = 19343340. Its totient is φ = 6437200.

The previous prime is 12884959. The next prime is 12885001. The reversal of 12884978 is 87948821.

It can be written as a sum of positive squares in 2 ways, for example, as 12837889 + 47089 = 3583^2 + 217^2 .

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

It is a Curzon 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, 2108 + ... + 5496.

Almost surely, 2^12884978 is an apocalyptic number.

12884978 is a deficient number, since it is larger than the sum of its proper divisors (6458362).

12884978 is a wasteful number, since it uses less digits than its factorization.

12884978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5292.

The product of its digits is 258048, while the sum is 47.

The square root of 12884978 is about 3589.5651547228. The cubic root of 12884978 is about 234.4379384868.

The spelling of 12884978 in words is "twelve million, eight hundred eighty-four thousand, nine hundred seventy-eight".