4226728 has 32 divisors (see below), whose sum is σ = 8854560. Its totient is φ = 1874880.

The previous prime is 4226713. The next prime is 4226767. The reversal of 4226728 is 8276224.

It is a self number, because there is not a number n which added to its sum of digits gives 4226728.

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, 3226 + ... + 4342.

It is an arithmetic number, because the mean of its divisors is an integer number (276705).

Almost surely, 2^4226728 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 4226728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4427280).

4226728 is an abundant number, since it is smaller than the sum of its proper divisors (4627832).

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

4226728 is a wasteful number, since it uses less digits than its factorization.

4226728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1173 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 4226728 is about 2055.9007758158. The cubic root of 4226728 is about 161.6843929028.

The spelling of 4226728 in words is "four million, two hundred twenty-six thousand, seven hundred twenty-eight".