12398878 has 8 divisors (see below), whose sum is σ = 19030968. Its totient is φ = 6055224.

The previous prime is 12398843. The next prime is 12398879. The reversal of 12398878 is 87889321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12398879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72001 + ... + 72172.

It is an arithmetic number, because the mean of its divisors is an integer number (2378871).

Almost surely, 2^12398878 is an apocalyptic number.

12398878 is a deficient number, since it is larger than the sum of its proper divisors (6632090).

12398878 is a wasteful number, since it uses less digits than its factorization.

12398878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144218.

The product of its digits is 193536, while the sum is 46.

The square root of 12398878 is about 3521.2040554333. The cubic root of 12398878 is about 231.4519241428.

The spelling of 12398878 in words is "twelve million, three hundred ninety-eight thousand, eight hundred seventy-eight".