8220870 has 48 divisors (see below), whose sum is σ = 24429600. Its totient is φ = 1878912.

The previous prime is 8220853. The next prime is 8220881. The reversal of 8220870 is 780228.

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 (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5895 + ... + 7154.

It is an arithmetic number, because the mean of its divisors is an integer number (508950).

Almost surely, 2^8220870 is an apocalyptic number.

8220870 is an abundant number, since it is smaller than the sum of its proper divisors (16208730).

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

8220870 is a wasteful number, since it uses less digits than its factorization.

8220870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13069 (or 13066 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 8220870 is about 2867.2059570251. The cubic root of 8220870 is about 201.8238997207.

The spelling of 8220870 in words is "eight million, two hundred twenty thousand, eight hundred seventy".