4457216 has 36 divisors (see below), whose sum is σ = 9296112. Its totient is φ = 2128896.

The previous prime is 4457203. The next prime is 4457221. The reversal of 4457216 is 6127544.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5510 + ... + 6266.

Almost surely, 2^4457216 is an apocalyptic number.

4457216 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4457216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4648056).

4457216 is an abundant number, since it is smaller than the sum of its proper divisors (4838896).

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

4457216 is an equidigital number, since it uses as much as digits as its factorization.

4457216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 782 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 4457216 is about 2111.2119741987. The cubic root of 4457216 is about 164.5714745003.

The spelling of 4457216 in words is "four million, four hundred fifty-seven thousand, two hundred sixteen".