12487578 has 16 divisors (see below), whose sum is σ = 25023936. Its totient is φ = 4154400.

The previous prime is 12487561. The next prime is 12487589. The reversal of 12487578 is 87578421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1875 + ... + 5337.

It is an arithmetic number, because the mean of its divisors is an integer number (1563996).

Almost surely, 2^12487578 is an apocalyptic number.

12487578 is an abundant number, since it is smaller than the sum of its proper divisors (12536358).

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

12487578 is a wasteful number, since it uses less digits than its factorization.

12487578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069.

The product of its digits is 125440, while the sum is 42.

The square root of 12487578 is about 3533.7767331850. The cubic root of 12487578 is about 232.0025391121.

The spelling of 12487578 in words is "twelve million, four hundred eighty-seven thousand, five hundred seventy-eight".