12833978 has 8 divisors (see below), whose sum is σ = 19467540. Its totient is φ = 6344800.

The previous prime is 12833957. The next prime is 12833981. The reversal of 12833978 is 87933821.

It can be written as a sum of positive squares in 2 ways, for example, as 11377129 + 1456849 = 3373^2 + 1207^2 .

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

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, 35873 + ... + 36228.

Almost surely, 2^12833978 is an apocalyptic number.

12833978 is a deficient number, since it is larger than the sum of its proper divisors (6633562).

12833978 is an equidigital number, since it uses as much as digits as its factorization.

12833978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72192.

The product of its digits is 72576, while the sum is 41.

The square root of 12833978 is about 3582.4541867273. The cubic root of 12833978 is about 234.1282200839.

The spelling of 12833978 in words is "twelve million, eight hundred thirty-three thousand, nine hundred seventy-eight".