8256538 has 8 divisors (see below), whose sum is σ = 12407220. Its totient is φ = 4120800.

The previous prime is 8256511. The next prime is 8256541. The reversal of 8256538 is 8356528.

It can be written as a sum of positive squares in 2 ways, for example, as 8082649 + 173889 = 2843^2 + 417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 8256497 and 8256506.

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, 2233 + ... + 4636.

Almost surely, 2^8256538 is an apocalyptic number.

8256538 is a deficient number, since it is larger than the sum of its proper divisors (4150682).

8256538 is a wasteful number, since it uses less digits than its factorization.

8256538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472.

The product of its digits is 57600, while the sum is 37.

The square root of 8256538 is about 2873.4192175873. The cubic root of 8256538 is about 202.1153639619.

Adding to 8256538 its product of digits (57600), we get a palindrome (8314138).

The spelling of 8256538 in words is "eight million, two hundred fifty-six thousand, five hundred thirty-eight".