12501636 has 24 divisors (see below), whose sum is σ = 33337920. Its totient is φ = 3571872.

The previous prime is 12501631. The next prime is 12501641. The reversal of 12501636 is 63610521.

It is an interprime number because it is at equal distance from previous prime (12501631) and next prime (12501641).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12501631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74331 + ... + 74498.

It is an arithmetic number, because the mean of its divisors is an integer number (1389080).

Almost surely, 2^12501636 is an apocalyptic number.

It is an amenable number.

12501636 is an abundant number, since it is smaller than the sum of its proper divisors (20836284).

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

12501636 is a wasteful number, since it uses less digits than its factorization.

12501636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148843 (or 148841 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 12501636 is about 3535.7652637018. The cubic root of 12501636 is about 232.0895660914.

The spelling of 12501636 in words is "twelve million, five hundred one thousand, six hundred thirty-six".