4228656 has 40 divisors (see below), whose sum is σ = 11223984. Its totient is φ = 1370880.

The previous prime is 4228649. The next prime is 4228669. The reversal of 4228656 is 6568224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586 + ... + 2966.

Almost surely, 2^4228656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4228656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5611992).

4228656 is an abundant number, since it is smaller than the sum of its proper divisors (6995328).

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

4228656 is a wasteful number, since it uses less digits than its factorization.

4228656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429 (or 2423 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 4228656 is about 2056.3696165816. The cubic root of 4228656 is about 161.7089729976.

It can be divided in two parts, 4228 and 656, that added together give a palindrome (4884).

The spelling of 4228656 in words is "four million, two hundred twenty-eight thousand, six hundred fifty-six".