228545317 has 32 divisors (see below), whose sum is σ = 317479680. Its totient is φ = 158699520.

The previous prime is 228545309. The next prime is 228545321. The reversal of 228545317 is 713545822.

It is not a de Polignac number, because 228545317 - 2³ = 228545309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228545017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25093 + ... + 32965.

It is an arithmetic number, because the mean of its divisors is an integer number (9921240).

Almost surely, 2^228545317 is an apocalyptic number.

It is an amenable number.

228545317 is a deficient number, since it is larger than the sum of its proper divisors (88934363).

228545317 is a wasteful number, since it uses less digits than its factorization.

228545317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7933.

The product of its digits is 67200, while the sum is 37.

The square root of 228545317 is about 15117.7153366506. The cubic root of 228545317 is about 611.3981340337.

It can be divided in two parts, 228 and 545317, that added together give a palindrome (545545).

The spelling of 228545317 in words is "two hundred twenty-eight million, five hundred forty-five thousand, three hundred seventeen".