8128806 has 48 divisors (see below), whose sum is σ = 19381824. Its totient is φ = 2264976.

The previous prime is 8128801. The next prime is 8128807. The reversal of 8128806 is 6088218.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12321 + ... + 12963.

It is an arithmetic number, because the mean of its divisors is an integer number (403788).

Almost surely, 2^8128806 is an apocalyptic number.

8128806 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 8128806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9690912).

8128806 is an abundant number, since it is smaller than the sum of its proper divisors (11253018).

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

8128806 is a wasteful number, since it uses less digits than its factorization.

8128806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 8128806 is about 2851.1061011474. The cubic root of 8128806 is about 201.0676735570.

The spelling of 8128806 in words is "eight million, one hundred twenty-eight thousand, eight hundred six".