12946878 has 80 divisors (see below), whose sum is σ = 33976800. Its totient is φ = 3683232.

The previous prime is 12946873. The next prime is 12946883. The reversal of 12946878 is 87864921.

It is an interprime number because it is at equal distance from previous prime (12946873) and next prime (12946883).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12946873) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55450 + ... + 55682.

It is an arithmetic number, because the mean of its divisors is an integer number (424710).

Almost surely, 2^12946878 is an apocalyptic number.

12946878 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 12946878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16988400).

12946878 is an abundant number, since it is smaller than the sum of its proper divisors (21029922).

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

12946878 is an equidigital number, since it uses as much as digits as its factorization.

12946878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 245 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 12946878 is about 3598.1770384460. The cubic root of 12946878 is about 234.8127556297.

It can be divided in two parts, 12946 and 878, that added together give a cube (13824 = 24³).

The spelling of 12946878 in words is "twelve million, nine hundred forty-six thousand, eight hundred seventy-eight".