228910239 has 16 divisors (see below), whose sum is σ = 341292640. Its totient is φ = 151632000.

The previous prime is 228910223. The next prime is 228910273. The reversal of 228910239 is 932019822.

It is not a de Polignac number, because 228910239 - 2⁴ = 228910223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228910289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22762 + ... + 31239.

It is an arithmetic number, because the mean of its divisors is an integer number (21330790).

Almost surely, 2^228910239 is an apocalyptic number.

228910239 is a deficient number, since it is larger than the sum of its proper divisors (112382401).

228910239 is a wasteful number, since it uses less digits than its factorization.

228910239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54167 (or 54161 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 228910239 is about 15129.7798728204. The cubic root of 228910239 is about 611.7233707509.

The spelling of 228910239 in words is "two hundred twenty-eight million, nine hundred ten thousand, two hundred thirty-nine".