2228281 has 8 divisors (see below), whose sum is σ = 2447424. Its totient is φ = 2011920.

The previous prime is 2228243. The next prime is 2228299. The reversal of 2228281 is 1828222.

2228281 = T₆₃₁ + T₆₃₂ + ... + T₆₄₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2228281 - 2⁷ = 2228153 is a prime.

It is a super-2 number, since 2×2228281² = 9930472429922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2³ + 2⁵ + 2¹⁷ + 8 + 2²¹ + 8 + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2228201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231 + ... + 2443.

It is an arithmetic number, because the mean of its divisors is an integer number (305928).

2^2228281 is an apocalyptic number.

It is an amenable number.

2228281 is a deficient number, since it is larger than the sum of its proper divisors (219143).

2228281 is a wasteful number, since it uses less digits than its factorization.

2228281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391.

The product of its digits is 1024, while the sum is 25.

The square root of 2228281 is about 1492.7427775742. The cubic root of 2228281 is about 130.6140769847.

The spelling of 2228281 in words is "two million, two hundred twenty-eight thousand, two hundred eighty-one".