4220786 has 8 divisors (see below), whose sum is σ = 6485724. Its totient is φ = 2058880.

The previous prime is 4220771. The next prime is 4220789. The reversal of 4220786 is 6870224.

It can be written as a sum of positive squares in 2 ways, for example, as 3308761 + 912025 = 1819^2 + 955^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4220789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25655 + ... + 25818.

Almost surely, 2^4220786 is an apocalyptic number.

4220786 is a deficient number, since it is larger than the sum of its proper divisors (2264938).

4220786 is a wasteful number, since it uses less digits than its factorization.

4220786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51516.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 4220786 is about 2054.4551589168. The cubic root of 4220786 is about 161.6085912254.

The spelling of 4220786 in words is "four million, two hundred twenty thousand, seven hundred eighty-six".