12578385 has 32 divisors (see below), whose sum is σ = 21555072. Its totient is φ = 6241280.

The previous prime is 12578359. The next prime is 12578393. The reversal of 12578385 is 58387521.

It is not a de Polignac number, because 12578385 - 2⁸ = 12578129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27055 + ... + 27515.

It is an arithmetic number, because the mean of its divisors is an integer number (673596).

Almost surely, 2^12578385 is an apocalyptic number.

12578385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12578385 is a deficient number, since it is larger than the sum of its proper divisors (8976687).

12578385 is a wasteful number, since it uses less digits than its factorization.

12578385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593.

The product of its digits is 67200, while the sum is 39.

The square root of 12578385 is about 3546.6018947720. The cubic root of 12578385 is about 232.5635391146.

The spelling of 12578385 in words is "twelve million, five hundred seventy-eight thousand, three hundred eighty-five".