12878738 has 16 divisors (see below), whose sum is σ = 20100480. Its totient is φ = 6183216.

The previous prime is 12878737. The next prime is 12878743. The reversal of 12878738 is 83787821.

It is not an unprimeable number, because it can be changed into a prime (12878737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4745 + ... + 6947.

It is an arithmetic number, because the mean of its divisors is an integer number (1256280).

Almost surely, 2^12878738 is an apocalyptic number.

12878738 is a deficient number, since it is larger than the sum of its proper divisors (7221742).

12878738 is a wasteful number, since it uses less digits than its factorization.

12878738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321.

The product of its digits is 150528, while the sum is 44.

The square root of 12878738 is about 3588.6958634022. The cubic root of 12878738 is about 234.4000874597.

The spelling of 12878738 in words is "twelve million, eight hundred seventy-eight thousand, seven hundred thirty-eight".