4228641 has 6 divisors (see below), whose sum is σ = 6108050. Its totient is φ = 2819088.

The previous prime is 4228613. The next prime is 4228649. The reversal of 4228641 is 1468224.

It can be written as a sum of positive squares in only one way, i.e., 3744225 + 484416 = 1935^2 + 696^2 .

It is not a de Polignac number, because 4228641 - 2⁷ = 4228513 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁴ + 2³ + 2¹⁵ + 8 + 6⁴ + 4¹¹ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4228649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 234916 + ... + 234933.

Almost surely, 2^4228641 is an apocalyptic number.

It is an amenable number.

4228641 is a deficient number, since it is larger than the sum of its proper divisors (1879409).

4228641 is a wasteful number, since it uses less digits than its factorization.

4228641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469855 (or 469852 counting only the distinct ones).

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

The square root of 4228641 is about 2056.3659693741. The cubic root of 4228641 is about 161.7087817912.

The spelling of 4228641 in words is "four million, two hundred twenty-eight thousand, six hundred forty-one".