12845178 has 72 divisors (see below), whose sum is σ = 31056480. Its totient is φ = 3825360.

The previous prime is 12845171. The next prime is 12845221. The reversal of 12845178 is 87154821.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12845171) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 180883 + ... + 180953.

It is an arithmetic number, because the mean of its divisors is an integer number (431340).

Almost surely, 2^12845178 is an apocalyptic number.

12845178 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12845178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15528240).

12845178 is an abundant number, since it is smaller than the sum of its proper divisors (18211302).

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

12845178 is a wasteful number, since it uses less digits than its factorization.

12845178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 118 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 12845178 is about 3584.0170200489. The cubic root of 12845178 is about 234.1963068881.

Adding to 12845178 its reverse (87154821), we get a palindrome (99999999).

The spelling of 12845178 in words is "twelve million, eight hundred forty-five thousand, one hundred seventy-eight".