12636530 has 16 divisors (see below), whose sum is σ = 23480064. Its totient is φ = 4891440.

The previous prime is 12636529. The next prime is 12636551. The reversal of 12636530 is 3563621.

12636530 = 205² + 206² + ... + 359².

It is a self number, because there is not a number n which added to its sum of digits gives 12636530.

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, 20072 + ... + 20691.

It is an arithmetic number, because the mean of its divisors is an integer number (1467504).

Almost surely, 2^12636530 is an apocalyptic number.

12636530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12636530 is a deficient number, since it is larger than the sum of its proper divisors (10843534).

12636530 is a wasteful number, since it uses less digits than its factorization.

12636530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40801.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 12636530 is about 3554.7897265521. The cubic root of 12636530 is about 232.9213387326.

The spelling of 12636530 in words is "twelve million, six hundred thirty-six thousand, five hundred thirty".