12340578 has 8 divisors (see below), whose sum is σ = 24681168. Its totient is φ = 4113524.

The previous prime is 12340571. The next prime is 12340591. The reversal of 12340578 is 87504321.

12340578 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

12340578 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (12340571) 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, 1028376 + ... + 1028387.

It is an arithmetic number, because the mean of its divisors is an integer number (3085146).

Almost surely, 2^12340578 is an apocalyptic number.

12340578 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12340578 is a wasteful number, since it uses less digits than its factorization.

12340578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056768.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 12340578 is about 3512.9158828529. The cubic root of 12340578 is about 231.0885887987.

Adding to 12340578 its reverse (87504321), we get a palindrome (99844899).

The spelling of 12340578 in words is "twelve million, three hundred forty thousand, five hundred seventy-eight".