12456500 has 48 divisors (see below), whose sum is σ = 31100160. Its totient is φ = 4269600.

The previous prime is 12456491. The next prime is 12456517. The reversal of 12456500 is 565421.

It is a congruent number.

It is an unprimeable number.

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, 1721 + ... + 5279.

It is an arithmetic number, because the mean of its divisors is an integer number (647920).

Almost surely, 2^12456500 is an apocalyptic number.

12456500 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 12456500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15550080).

12456500 is an abundant number, since it is smaller than the sum of its proper divisors (18643660).

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

12456500 is a wasteful number, since it uses less digits than its factorization.

12456500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 12456500 is about 3529.3767155122. The cubic root of 12456500 is about 231.8099166370.

The spelling of 12456500 in words is "twelve million, four hundred fifty-six thousand, five hundred".