8223870 has 32 divisors (see below), whose sum is σ = 19813248. Its totient is φ = 2184608.

The previous prime is 8223863. The next prime is 8223871. The reversal of 8223870 is 783228.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8223871) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13717 + ... + 14303.

It is an arithmetic number, because the mean of its divisors is an integer number (619164).

Almost surely, 2^8223870 is an apocalyptic number.

8223870 is an abundant number, since it is smaller than the sum of its proper divisors (11589378).

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

8223870 is a wasteful number, since it uses less digits than its factorization.

8223870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 8223870 is about 2867.7290667007. The cubic root of 8223870 is about 201.8484469224.

The spelling of 8223870 in words is "eight million, two hundred twenty-three thousand, eight hundred seventy".