12617256 has 16 divisors (see below), whose sum is σ = 31543200. Its totient is φ = 4205744.

The previous prime is 12617251. The next prime is 12617257. The reversal of 12617256 is 65271621.

It is not an unprimeable number, because it can be changed into a prime (12617251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262836 + ... + 262883.

It is an arithmetic number, because the mean of its divisors is an integer number (1971450).

Almost surely, 2^12617256 is an apocalyptic number.

It is an amenable number.

12617256 is an abundant number, since it is smaller than the sum of its proper divisors (18925944).

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

12617256 is a wasteful number, since it uses less digits than its factorization.

12617256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525728 (or 525724 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 12617256 is about 3552.0777018528. The cubic root of 12617256 is about 232.8028565680.

Adding to 12617256 its reverse (65271621), we get a palindrome (77888877).

The spelling of 12617256 in words is "twelve million, six hundred seventeen thousand, two hundred fifty-six".