12975838 has 4 divisors (see below), whose sum is σ = 19463760. Its totient is φ = 6487918.

The previous prime is 12975821. The next prime is 12975869. The reversal of 12975838 is 83857921.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 12975794 and 12975803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3243958 + ... + 3243961.

It is an arithmetic number, because the mean of its divisors is an integer number (4865940).

Almost surely, 2^12975838 is an apocalyptic number.

12975838 is a deficient number, since it is larger than the sum of its proper divisors (6487922).

12975838 is an equidigital number, since it uses as much as digits as its factorization.

12975838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6487921.

The product of its digits is 120960, while the sum is 43.

The square root of 12975838 is about 3602.1990505801. The cubic root of 12975838 is about 234.9877042005.

It can be divided in two parts, 1297 and 5838, that multiplied together give a triangular number (7571886 = T₃₈₉₁).

The spelling of 12975838 in words is "twelve million, nine hundred seventy-five thousand, eight hundred thirty-eight".