228066049 has 4 divisors (see below), whose sum is σ = 232369236. Its totient is φ = 223762864.

The previous prime is 228066031. The next prime is 228066071. The reversal of 228066049 is 940660822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940660822 = 2 ⋅470330411.

It can be written as a sum of positive squares in 2 ways, for example, as 65044225 + 163021824 = 8065^2 + 12768^2 .

It is a cyclic number.

It is not a de Polignac number, because 228066049 - 2⁵ = 228066017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228065999 and 228066017.

It is not an unprimeable number, because it can be changed into a prime (228066649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2151514 + ... + 2151619.

It is an arithmetic number, because the mean of its divisors is an integer number (58092309).

Almost surely, 2^228066049 is an apocalyptic number.

It is an amenable number.

228066049 is a deficient number, since it is larger than the sum of its proper divisors (4303187).

228066049 is an equidigital number, since it uses as much as digits as its factorization.

228066049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303186.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 228066049 is about 15101.8558131112. The cubic root of 228066049 is about 610.9704600960.

The spelling of 228066049 in words is "two hundred twenty-eight million, sixty-six thousand, forty-nine".