8256870 has 64 divisors (see below), whose sum is σ = 22472640. Its totient is φ = 2156544.

The previous prime is 8256863. The next prime is 8256889. The reversal of 8256870 is 786528.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14022 + ... + 14598.

It is an arithmetic number, because the mean of its divisors is an integer number (351135).

Almost surely, 2^8256870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8256870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11236320).

8256870 is an abundant number, since it is smaller than the sum of its proper divisors (14215770).

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

8256870 is a wasteful number, since it uses less digits than its factorization.

8256870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 8256870 is about 2873.4769879016. The cubic root of 8256870 is about 202.1180729828.

The spelling of 8256870 in words is "eight million, two hundred fifty-six thousand, eight hundred seventy".