228486187 has 2 divisors, whose sum is σ = 228486188. Its totient is φ = 228486186.

The previous prime is 228486149. The next prime is 228486197. The reversal of 228486187 is 781684822.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228486187 - 2¹⁵ = 228453419 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (228486197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114243093 + 114243094.

It is an arithmetic number, because the mean of its divisors is an integer number (114243094).

Almost surely, 2^228486187 is an apocalyptic number.

228486187 is a deficient number, since it is larger than the sum of its proper divisors (1).

228486187 is an equidigital number, since it uses as much as digits as its factorization.

228486187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 344064, while the sum is 46.

The square root of 228486187 is about 15115.7595574950. The cubic root of 228486187 is about 611.3454018369.

The spelling of 228486187 in words is "two hundred twenty-eight million, four hundred eighty-six thousand, one hundred eighty-seven".