12506022 has 32 divisors (see below), whose sum is σ = 28078560. Its totient is φ = 4125600.

The previous prime is 12506003. The next prime is 12506023. The reversal of 12506022 is 22060521.

12506022 is a `hidden beast` number, since 12 + 50 + 602 + 2 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12505986 and 12506004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4308 + ... + 6600.

It is an arithmetic number, because the mean of its divisors is an integer number (877455).

Almost surely, 2^12506022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12506022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14039280).

12506022 is an abundant number, since it is smaller than the sum of its proper divisors (15572538).

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

12506022 is a wasteful number, since it uses less digits than its factorization.

12506022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2399 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12506022 is about 3536.3854427932. The cubic root of 12506022 is about 232.1167045613.

Adding to 12506022 its reverse (22060521), we get a palindrome (34566543).

The spelling of 12506022 in words is "twelve million, five hundred six thousand, twenty-two".