4228281 has 10 divisors (see below), whose sum is σ = 6316442. Its totient is φ = 2818800.

The previous prime is 4228271. The next prime is 4228309. The reversal of 4228281 is 1828224.

It can be written as a sum of positive squares in only one way, i.e., 4064256 + 164025 = 2016^2 + 405^2 .

It is not a de Polignac number, because 4228281 - 2¹⁰ = 4227257 is a prime.

It is a super-2 number, since 2×4228281² = 35756720429922, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4228271) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 26020 + ... + 26181.

Almost surely, 2^4228281 is an apocalyptic number.

It is an amenable number.

4228281 is a deficient number, since it is larger than the sum of its proper divisors (2088161).

4228281 is an equidigital number, since it uses as much as digits as its factorization.

4228281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52213 (or 52204 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 4228281 is about 2056.2784344539. The cubic root of 4228281 is about 161.7041927035.

The spelling of 4228281 in words is "four million, two hundred twenty-eight thousand, two hundred eighty-one".