8130556 has 96 divisors (see below), whose sum is σ = 19353600. Its totient is φ = 2903040.

The previous prime is 8130553. The next prime is 8130581. The reversal of 8130556 is 6550318.

It is a super-2 number, since 2×8130556² = 132211881738272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8130553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262261 + ... + 262291.

It is an arithmetic number, because the mean of its divisors is an integer number (201600).

Almost surely, 2^8130556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8130556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9676800).

8130556 is an abundant number, since it is smaller than the sum of its proper divisors (11223044).

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

8130556 is a wasteful number, since it uses less digits than its factorization.

8130556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 8130556 is about 2851.4129830665. The cubic root of 8130556 is about 201.0821013906.

Subtracting from 8130556 its sum of digits (28), we obtain a triangular number (8130528 = T₄₀₃₂).

The spelling of 8130556 in words is "eight million, one hundred thirty thousand, five hundred fifty-six".