12158958 has 24 divisors (see below), whose sum is σ = 28288872. Its totient is φ = 3473904.

The previous prime is 12158921. The next prime is 12158987. The reversal of 12158958 is 85985121.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20385 + ... + 20972.

It is an arithmetic number, because the mean of its divisors is an integer number (1178703).

Almost surely, 2^12158958 is an apocalyptic number.

12158958 is an abundant number, since it is smaller than the sum of its proper divisors (16129914).

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

12158958 is a wasteful number, since it uses less digits than its factorization.

12158958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41376 (or 41369 counting only the distinct ones).

The product of its digits is 28800, while the sum is 39.

The square root of 12158958 is about 3486.9697446350. The cubic root of 12158958 is about 229.9493146031.

The spelling of 12158958 in words is "twelve million, one hundred fifty-eight thousand, nine hundred fifty-eight".