4228688648 has 36 divisors (see below), whose sum is σ = 8054547165. Its totient is φ = 2081329248.

The previous prime is 4228688603. The next prime is 4228688669. The reversal of 4228688648 is 8468868224.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 3711490084 + 517198564 = 60922^2 + 22742^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=45982.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4228688593 and 4228688602.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15265886 + ... + 15266162.

Almost surely, 2^4228688648 is an apocalyptic number.

It is an amenable number.

4228688648 is a deficient number, since it is larger than the sum of its proper divisors (3825858517).

4228688648 is an frugal number, since it uses more digits than its factorization.

4228688648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 362 counting only the distinct ones).

The product of its digits is 9437184, while the sum is 56.

The square root of 4228688648 is about 65028.3680250397. The cubic root of 4228688648 is about 1617.0938916298.

The spelling of 4228688648 in words is "four billion, two hundred twenty-eight million, six hundred eighty-eight thousand, six hundred forty-eight".