8220942 has 24 divisors (see below), whose sum is σ = 18116280. Its totient is φ = 2693520.

The previous prime is 8220937. The next prime is 8221009. The reversal of 8220942 is 2490228.

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 11 ways as a sum of consecutive naturals, for example, 2809 + ... + 4932.

It is an arithmetic number, because the mean of its divisors is an integer number (754845).

Almost surely, 2^8220942 is an apocalyptic number.

8220942 is an abundant number, since it is smaller than the sum of its proper divisors (9895338).

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

8220942 is a wasteful number, since it uses less digits than its factorization.

8220942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7808 (or 7805 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8220942 is about 2867.2185127751. The cubic root of 8220942 is about 201.8244889235.

The spelling of 8220942 in words is "eight million, two hundred twenty thousand, nine hundred forty-two".