12578528 has 12 divisors (see below), whose sum is σ = 24764040. Its totient is φ = 6289248.

The previous prime is 12578507. The next prime is 12578549. The reversal of 12578528 is 82587521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12578507) and next prime (12578549).

It is a junction number, because it is equal to n+sod(n) for n = 12578491 and 12578500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196508 + ... + 196571.

It is an arithmetic number, because the mean of its divisors is an integer number (2063670).

Almost surely, 2^12578528 is an apocalyptic number.

It is an amenable number.

12578528 is a deficient number, since it is larger than the sum of its proper divisors (12185512).

12578528 is an equidigital number, since it uses as much as digits as its factorization.

12578528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393089 (or 393081 counting only the distinct ones).

The product of its digits is 44800, while the sum is 38.

The square root of 12578528 is about 3546.6220548573. The cubic root of 12578528 is about 232.5644204270.

The spelling of 12578528 in words is "twelve million, five hundred seventy-eight thousand, five hundred twenty-eight".