12320578 has 8 divisors (see below), whose sum is σ = 19077120. Its totient is φ = 5961540.

The previous prime is 12320549. The next prime is 12320579. The reversal of 12320578 is 87502321.

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

It is not an unprimeable number, because it can be changed into a prime (12320579) 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, 99298 + ... + 99421.

It is an arithmetic number, because the mean of its divisors is an integer number (2384640).

Almost surely, 2^12320578 is an apocalyptic number.

12320578 is a deficient number, since it is larger than the sum of its proper divisors (6756542).

12320578 is a wasteful number, since it uses less digits than its factorization.

12320578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198752.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 12320578 is about 3510.0680905076. The cubic root of 12320578 is about 230.9636818774.

Adding to 12320578 its reverse (87502321), we get a palindrome (99822899).

The spelling of 12320578 in words is "twelve million, three hundred twenty thousand, five hundred seventy-eight".