12878258 has 8 divisors (see below), whose sum is σ = 19682028. Its totient is φ = 6317584.

The previous prime is 12878227. The next prime is 12878267. The reversal of 12878258 is 85287821.

It can be written as a sum of positive squares in 2 ways, for example, as 11539609 + 1338649 = 3397^2 + 1157^2 .

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

It is a super-2 number, since 2×12878258² = 331699058229128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60641 + ... + 60852.

Almost surely, 2^12878258 is an apocalyptic number.

12878258 is a deficient number, since it is larger than the sum of its proper divisors (6803770).

12878258 is a wasteful number, since it uses less digits than its factorization.

12878258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121548.

The product of its digits is 71680, while the sum is 41.

The square root of 12878258 is about 3588.6289861171. The cubic root of 12878258 is about 234.3971753359.

The spelling of 12878258 in words is "twelve million, eight hundred seventy-eight thousand, two hundred fifty-eight".