4220256 has 24 divisors (see below), whose sum is σ = 11078424. Its totient is φ = 1406720.

The previous prime is 4220243. The next prime is 4220269. The reversal of 4220256 is 6520224.

It is an interprime number because it is at equal distance from previous prime (4220243) and next prime (4220269).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21885 + ... + 22076.

It is an arithmetic number, because the mean of its divisors is an integer number (461601).

Almost surely, 2^4220256 is an apocalyptic number.

It is an amenable number.

4220256 is an abundant number, since it is smaller than the sum of its proper divisors (6858168).

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

4220256 is a wasteful number, since it uses less digits than its factorization.

4220256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43974 (or 43966 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 4220256 is about 2054.3261668976. The cubic root of 4220256 is about 161.6018265977.

Subtracting 4220256 from its reverse (6520224), we obtain a cube (2299968 = 132³).

The spelling of 4220256 in words is "four million, two hundred twenty thousand, two hundred fifty-six".