12506356 has 12 divisors (see below), whose sum is σ = 23173668. Its totient is φ = 5885312.

The previous prime is 12506341. The next prime is 12506381. The reversal of 12506356 is 65360521.

It can be written as a sum of positive squares in 2 ways, for example, as 4553956 + 7952400 = 2134^2 + 2820^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91891 + ... + 92026.

It is an arithmetic number, because the mean of its divisors is an integer number (1931139).

Almost surely, 2^12506356 is an apocalyptic number.

It is an amenable number.

12506356 is a deficient number, since it is larger than the sum of its proper divisors (10667312).

12506356 is a wasteful number, since it uses less digits than its factorization.

12506356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183938 (or 183936 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 12506356 is about 3536.4326658371. The cubic root of 12506356 is about 232.1187709335.

Adding to 12506356 its reverse (65360521), we get a palindrome (77866877).

The spelling of 12506356 in words is "twelve million, five hundred six thousand, three hundred fifty-six".