12898278 has 40 divisors (see below), whose sum is σ = 29220048. Its totient is φ = 4252176.

The previous prime is 12898273. The next prime is 12898279. The reversal of 12898278 is 87289821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12898273) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16300 + ... + 17072.

Almost surely, 2^12898278 is an apocalyptic number.

12898278 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 12898278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14610024).

12898278 is an abundant number, since it is smaller than the sum of its proper divisors (16321770).

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

12898278 is a wasteful number, since it uses less digits than its factorization.

12898278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 881 counting only the distinct ones).

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

The square root of 12898278 is about 3591.4172689901. The cubic root of 12898278 is about 234.5185737914.

The spelling of 12898278 in words is "twelve million, eight hundred ninety-eight thousand, two hundred seventy-eight".