228156871 has 2 divisors, whose sum is σ = 228156872. Its totient is φ = 228156870.

The previous prime is 228156823. The next prime is 228156889. The reversal of 228156871 is 178651822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228156871 - 2⁹ = 228156359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228156811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114078435 + 114078436.

It is an arithmetic number, because the mean of its divisors is an integer number (114078436).

Almost surely, 2^228156871 is an apocalyptic number.

228156871 is a deficient number, since it is larger than the sum of its proper divisors (1).

228156871 is an equidigital number, since it uses as much as digits as its factorization.

228156871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 40.

The square root of 228156871 is about 15104.8624952364. The cubic root of 228156871 is about 611.0515509250.

The spelling of 228156871 in words is "two hundred twenty-eight million, one hundred fifty-six thousand, eight hundred seventy-one".