4220266 has 4 divisors (see below), whose sum is σ = 6330402. Its totient is φ = 2110132.

The previous prime is 4220243. The next prime is 4220269. The reversal of 4220266 is 6620224.

It is a happy number.

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., 2792241 + 1428025 = 1671^2 + 1195^2 .

It is a super-2 number, since 2×4220266² = 35621290221512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4220269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055065 + ... + 1055068.

Almost surely, 2^4220266 is an apocalyptic number.

4220266 is a deficient number, since it is larger than the sum of its proper divisors (2110136).

4220266 is a wasteful number, since it uses less digits than its factorization.

4220266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110135.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4220266 is about 2054.3286007842. The cubic root of 4220266 is about 161.6019542374.

The spelling of 4220266 in words is "four million, two hundred twenty thousand, two hundred sixty-six".