12298878 has 60 divisors (see below), whose sum is σ = 28836720. Its totient is φ = 3917160.

The previous prime is 12298877. The next prime is 12298883. The reversal of 12298878 is 87889221.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12298877) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 155643 + ... + 155721.

It is an arithmetic number, because the mean of its divisors is an integer number (480612).

Almost surely, 2^12298878 is an apocalyptic number.

12298878 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 12298878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14418360).

12298878 is an abundant number, since it is smaller than the sum of its proper divisors (16537842).

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

12298878 is an equidigital number, since it uses as much as digits as its factorization.

12298878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 115 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 12298878 is about 3506.9756201035. The cubic root of 12298878 is about 230.8280048758.

The spelling of 12298878 in words is "twelve million, two hundred ninety-eight thousand, eight hundred seventy-eight".