12578005 has 16 divisors (see below), whose sum is σ = 16702848. Its totient is φ = 9016000.

The previous prime is 12577997. The next prime is 12578009. The reversal of 12578005 is 50087521.

It is not a de Polignac number, because 12578005 - 2³ = 12577997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12578009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2295 + ... + 5515.

It is an arithmetic number, because the mean of its divisors is an integer number (1043928).

Almost surely, 2^12578005 is an apocalyptic number.

It is an amenable number.

12578005 is a deficient number, since it is larger than the sum of its proper divisors (4124843).

12578005 is a wasteful number, since it uses less digits than its factorization.

12578005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 12578005 is about 3546.5483219604. The cubic root of 12578005 is about 232.5611971331.

The spelling of 12578005 in words is "twelve million, five hundred seventy-eight thousand, five".