228028177 has 12 divisors (see below), whose sum is σ = 259179060. Its totient is φ = 199405152.

The previous prime is 228028169. The next prime is 228028181. The reversal of 228028177 is 771820822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 88811776 + 139216401 = 9424^2 + 11799^2 .

It is not a de Polignac number, because 228028177 - 2³ = 228028169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228028117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19602 + ... + 28987.

It is an arithmetic number, because the mean of its divisors is an integer number (21598255).

Almost surely, 2^228028177 is an apocalyptic number.

It is an amenable number.

228028177 is a deficient number, since it is larger than the sum of its proper divisors (31150883).

228028177 is a wasteful number, since it uses less digits than its factorization.

228028177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48640 (or 48621 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 228028177 is about 15100.6018754221. The cubic root of 228028177 is about 610.9366395511.

Adding to 228028177 its reverse (771820822), we get a palindrome (999848999).

The spelling of 228028177 in words is "two hundred twenty-eight million, twenty-eight thousand, one hundred seventy-seven".