8220243 has 8 divisors (see below), whose sum is σ = 11001856. Its totient is φ = 5459400.

The previous prime is 8220229. The next prime is 8220271. The reversal of 8220243 is 3420228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8220243 - 2⁵ = 8220211 is a prime.

It is a Duffinian number.

8220243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8220203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4243 + ... + 5868.

It is an arithmetic number, because the mean of its divisors is an integer number (1375232).

Almost surely, 2^8220243 is an apocalyptic number.

8220243 is a deficient number, since it is larger than the sum of its proper divisors (2781613).

8220243 is a wasteful number, since it uses less digits than its factorization.

8220243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 8220243 is about 2867.0966150446. The cubic root of 8220243 is about 201.8187686010.

The spelling of 8220243 in words is "eight million, two hundred twenty thousand, two hundred forty-three".