8130856 has 8 divisors (see below), whose sum is σ = 15245370. Its totient is φ = 4065424.

The previous prime is 8130853. The next prime is 8130869. The reversal of 8130856 is 6580318.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 656100 = 2734^2 + 810^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×8130856² = 132221638585472, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (8130851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 508171 + ... + 508186.

Almost surely, 2^8130856 is an apocalyptic number.

It is an amenable number.

8130856 is a deficient number, since it is larger than the sum of its proper divisors (7114514).

8130856 is a wasteful number, since it uses less digits than its factorization.

8130856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016363 (or 1016359 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 8130856 is about 2851.4655880792. The cubic root of 8130856 is about 201.0845745256.

The spelling of 8130856 in words is "eight million, one hundred thirty thousand, eight hundred fifty-six".