12506530 has 8 divisors (see below), whose sum is σ = 22511772. Its totient is φ = 5002608.

The previous prime is 12506519. The next prime is 12506537. The reversal of 12506530 is 3560521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11431161 + 1075369 = 3381^2 + 1037^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12506537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625317 + ... + 625336.

Almost surely, 2^12506530 is an apocalyptic number.

12506530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12506530 is a deficient number, since it is larger than the sum of its proper divisors (10005242).

12506530 is a wasteful number, since it uses less digits than its factorization.

12506530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250660.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 12506530 is about 3536.4572668138. The cubic root of 12506530 is about 232.1198474122.

The spelling of 12506530 in words is "twelve million, five hundred six thousand, five hundred thirty".