12636500 has 48 divisors (see below), whose sum is σ = 27955200. Its totient is φ = 4989600.

The previous prime is 12636497. The next prime is 12636517. The reversal of 12636500 is 563621.

It is a super-2 number, since 2×12636500² = 319362264500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63401 + ... + 63599.

It is an arithmetic number, because the mean of its divisors is an integer number (582400).

Almost surely, 2^12636500 is an apocalyptic number.

12636500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12636500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13977600).

12636500 is an abundant number, since it is smaller than the sum of its proper divisors (15318700).

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

12636500 is a wasteful number, since it uses less digits than its factorization.

12636500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 12636500 is about 3554.7855068907. The cubic root of 12636500 is about 232.9211544086.

The spelling of 12636500 in words is "twelve million, six hundred thirty-six thousand, five hundred".