12438078 has 32 divisors (see below), whose sum is σ = 26148096. Its totient is φ = 3936768.

The previous prime is 12438077. The next prime is 12438079. The reversal of 12438078 is 87083421.

It is an interprime number because it is at equal distance from previous prime (12438077) and next prime (12438079).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12438077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26401 + ... + 26867.

It is an arithmetic number, because the mean of its divisors is an integer number (817128).

Almost surely, 2^12438078 is an apocalyptic number.

12438078 is an abundant number, since it is smaller than the sum of its proper divisors (13710018).

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

12438078 is a wasteful number, since it uses less digits than its factorization.

12438078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 12438078 is about 3526.7659406317. The cubic root of 12438078 is about 231.6955851852.

The spelling of 12438078 in words is "twelve million, four hundred thirty-eight thousand, seventy-eight".