12631500 has 144 divisors (see below), whose sum is σ = 45654336. Its totient is φ = 2880000.

The previous prime is 12631481. The next prime is 12631511. The reversal of 12631500 is 513621.

12631500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31300 + ... + 31700.

It is an arithmetic number, because the mean of its divisors is an integer number (317044).

Almost surely, 2^12631500 is an apocalyptic number.

12631500 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 12631500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22827168).

12631500 is an abundant number, since it is smaller than the sum of its proper divisors (33022836).

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

12631500 is a wasteful number, since it uses less digits than its factorization.

12631500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 12631500 is about 3554.0821599957. The cubic root of 12631500 is about 232.8904296718.

It can be divided in two parts, 12631 and 500, that added together give a palindrome (13131).

The spelling of 12631500 in words is "twelve million, six hundred thirty-one thousand, five hundred".