12958278 has 8 divisors (see below), whose sum is σ = 25916568. Its totient is φ = 4319424.

The previous prime is 12958271. The next prime is 12958289. The reversal of 12958278 is 87285921.

12958278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

12958278 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12958271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079851 + ... + 1079862.

It is an arithmetic number, because the mean of its divisors is an integer number (3239571).

Almost surely, 2^12958278 is an apocalyptic number.

12958278 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12958278 is a wasteful number, since it uses less digits than its factorization.

12958278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159718.

The product of its digits is 80640, while the sum is 42.

The square root of 12958278 is about 3599.7608253883. The cubic root of 12958278 is about 234.8816546111.

The spelling of 12958278 in words is "twelve million, nine hundred fifty-eight thousand, two hundred seventy-eight".