12578145 has 16 divisors (see below), whose sum is σ = 20594112. Its totient is φ = 6552000.

The previous prime is 12578131. The next prime is 12578161. The reversal of 12578145 is 54187521.

It is not a de Polignac number, because 12578145 - 2⁴ = 12578129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9106 + ... + 10395.

It is an arithmetic number, because the mean of its divisors is an integer number (1287132).

Almost surely, 2^12578145 is an apocalyptic number.

12578145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12578145 is a deficient number, since it is larger than the sum of its proper divisors (8015967).

12578145 is a wasteful number, since it uses less digits than its factorization.

12578145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19552.

The product of its digits is 11200, while the sum is 33.

The square root of 12578145 is about 3546.5680594062. The cubic root of 12578145 is about 232.5620599738.

The spelling of 12578145 in words is "twelve million, five hundred seventy-eight thousand, one hundred forty-five".