12506340 has 96 divisors (see below), whose sum is σ = 43674624. Its totient is φ = 2597760.

The previous prime is 12506323. The next prime is 12506341. The reversal of 12506340 is 4360521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12506341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3267 + ... + 5973.

It is an arithmetic number, because the mean of its divisors is an integer number (454944).

Almost surely, 2^12506340 is an apocalyptic number.

12506340 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 12506340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21837312).

12506340 is an abundant number, since it is smaller than the sum of its proper divisors (31168284).

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

12506340 is a wasteful number, since it uses less digits than its factorization.

12506340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 12506340 is about 3536.4304036698. The cubic root of 12506340 is about 232.1186719465.

Adding to 12506340 its reverse (4360521), we get a palindrome (16866861).

The spelling of 12506340 in words is "twelve million, five hundred six thousand, three hundred forty".