12635500 has 48 divisors (see below), whose sum is σ = 28383264. Its totient is φ = 4910400.

The previous prime is 12635461. The next prime is 12635509. The reversal of 12635500 is 553621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12635509) 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 15 ways as a sum of consecutive naturals, for example, 18159 + ... + 18841.

It is an arithmetic number, because the mean of its divisors is an integer number (591318).

Almost surely, 2^12635500 is an apocalyptic number.

12635500 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 12635500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14191632).

12635500 is an abundant number, since it is smaller than the sum of its proper divisors (15747764).

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

12635500 is a wasteful number, since it uses less digits than its factorization.

12635500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 727 counting only the distinct ones).

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

The square root of 12635500 is about 3554.6448486452. The cubic root of 12635500 is about 232.9150101097.

The spelling of 12635500 in words is "twelve million, six hundred thirty-five thousand, five hundred".