4428216 has 128 divisors (see below), whose sum is σ = 14112000. Its totient is φ = 1275264.

The previous prime is 4428191. The next prime is 4428223. The reversal of 4428216 is 6128244.

4428216 is a `hidden beast` number, since 442 + 8 + 216 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 4428216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53311 + ... + 53393.

It is an arithmetic number, because the mean of its divisors is an integer number (110250).

Almost surely, 2^4428216 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 4428216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7056000).

4428216 is an abundant number, since it is smaller than the sum of its proper divisors (9683784).

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

4428216 is a wasteful number, since it uses less digits than its factorization.

4428216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 120 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 4428216 is about 2104.3326733195. The cubic root of 4428216 is about 164.2137802999.

The spelling of 4428216 in words is "four million, four hundred twenty-eight thousand, two hundred sixteen".