12440878 has 8 divisors (see below), whose sum is σ = 18694872. Its totient is φ = 6209256.

The previous prime is 12440873. The next prime is 12440881. The reversal of 12440878 is 87804421.

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 (12440873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4125 + ... + 6472.

It is an arithmetic number, because the mean of its divisors is an integer number (2336859).

Almost surely, 2^12440878 is an apocalyptic number.

12440878 is a deficient number, since it is larger than the sum of its proper divisors (6253994).

12440878 is a wasteful number, since it uses less digits than its factorization.

12440878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11186.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 12440878 is about 3527.1628825446. The cubic root of 12440878 is about 231.7129699441.

The spelling of 12440878 in words is "twelve million, four hundred forty thousand, eight hundred seventy-eight".