228143873 has 2 divisors, whose sum is σ = 228143874. Its totient is φ = 228143872.

The previous prime is 228143869. The next prime is 228143879. The reversal of 228143873 is 378341822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228100609 + 43264 = 15103^2 + 208^2 .

It is a cyclic number.

It is not a de Polignac number, because 228143873 - 2² = 228143869 is a prime.

It is not a weakly prime, because it can be changed into another prime (228143879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114071936 + 114071937.

It is an arithmetic number, because the mean of its divisors is an integer number (114071937).

Almost surely, 2^228143873 is an apocalyptic number.

It is an amenable number.

228143873 is a deficient number, since it is larger than the sum of its proper divisors (1).

228143873 is an equidigital number, since it uses as much as digits as its factorization.

228143873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 228143873 is about 15104.4322303091. The cubic root of 228143873 is about 611.0399469223.

The spelling of 228143873 in words is "two hundred twenty-eight million, one hundred forty-three thousand, eight hundred seventy-three".