228301147 has 4 divisors (see below), whose sum is σ = 233610520. Its totient is φ = 222991776.

The previous prime is 228301141. The next prime is 228301159. The reversal of 228301147 is 741103822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228301147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228301141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654622 + ... + 2654707.

It is an arithmetic number, because the mean of its divisors is an integer number (58402630).

Almost surely, 2^228301147 is an apocalyptic number.

228301147 is a deficient number, since it is larger than the sum of its proper divisors (5309373).

228301147 is an equidigital number, since it uses as much as digits as its factorization.

228301147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309372.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 228301147 is about 15109.6375535616. The cubic root of 228301147 is about 611.1803241632.

Adding to 228301147 its reverse (741103822), we get a palindrome (969404969).

The spelling of 228301147 in words is "two hundred twenty-eight million, three hundred one thousand, one hundred forty-seven".