8422890 has 64 divisors (see below), whose sum is σ = 24330240. Its totient is φ = 1823040.

The previous prime is 8422879. The next prime is 8422913. The reversal of 8422890 is 982248.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2935 + ... + 5045.

It is an arithmetic number, because the mean of its divisors is an integer number (380160).

Almost surely, 2^8422890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8422890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12165120).

8422890 is an abundant number, since it is smaller than the sum of its proper divisors (15907350).

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

8422890 is a wasteful number, since it uses less digits than its factorization.

8422890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 8422890 is about 2902.2215628721. The cubic root of 8422890 is about 203.4637492351.

The spelling of 8422890 in words is "eight million, four hundred twenty-two thousand, eight hundred ninety".