4220856 has 32 divisors (see below), whose sum is σ = 11725200. Its totient is φ = 1406880.

The previous prime is 4220851. The next prime is 4220857. The reversal of 4220856 is 6580224.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220851) 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, 9555 + ... + 9986.

Almost surely, 2^4220856 is an apocalyptic number.

It is an amenable number.

4220856 is an abundant number, since it is smaller than the sum of its proper divisors (7504344).

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

4220856 is a wasteful number, since it uses less digits than its factorization.

4220856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19556 (or 19546 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 4220856 is about 2054.4721949932. The cubic root of 4220856 is about 161.6094846245.

The spelling of 4220856 in words is "four million, two hundred twenty thousand, eight hundred fifty-six".