8220434 has 4 divisors (see below), whose sum is σ = 12330654. Its totient is φ = 4110216.

The previous prime is 8220419. The next prime is 8220461. The reversal of 8220434 is 4340228.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4853209 + 3367225 = 2203^2 + 1835^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2055107 + ... + 2055110.

Almost surely, 2^8220434 is an apocalyptic number.

8220434 is a deficient number, since it is larger than the sum of its proper divisors (4110220).

8220434 is a wasteful number, since it uses less digits than its factorization.

8220434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110219.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 8220434 is about 2867.1299238088. The cubic root of 8220434 is about 201.8203316970.

The spelling of 8220434 in words is "eight million, two hundred twenty thousand, four hundred thirty-four".