228784873 has 2 divisors, whose sum is σ = 228784874. Its totient is φ = 228784872.

The previous prime is 228784859. The next prime is 228784877. The reversal of 228784873 is 378487822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227315929 + 1468944 = 15077^2 + 1212^2 .

It is a cyclic number.

It is not a de Polignac number, because 228784873 - 2¹⁷ = 228653801 is a prime.

It is a super-2 number, since 2×228784873² = 104685036227252258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228784877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114392436 + 114392437.

It is an arithmetic number, because the mean of its divisors is an integer number (114392437).

Almost surely, 2^228784873 is an apocalyptic number.

It is an amenable number.

228784873 is a deficient number, since it is larger than the sum of its proper divisors (1).

228784873 is an equidigital number, since it uses as much as digits as its factorization.

228784873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1204224, while the sum is 49.

The square root of 228784873 is about 15125.6362841369. The cubic root of 228784873 is about 611.6116773106.

The spelling of 228784873 in words is "two hundred twenty-eight million, seven hundred eighty-four thousand, eight hundred seventy-three".