228318673 has 4 divisors (see below), whose sum is σ = 249074928. Its totient is φ = 207562420.

The previous prime is 228318659. The next prime is 228318679. The reversal of 228318673 is 376813822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228318673 - 2⁹ = 228318161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228318679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10378111 + ... + 10378132.

It is an arithmetic number, because the mean of its divisors is an integer number (62268732).

Almost surely, 2^228318673 is an apocalyptic number.

It is an amenable number.

228318673 is a deficient number, since it is larger than the sum of its proper divisors (20756255).

228318673 is a wasteful number, since it uses less digits than its factorization.

228318673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20756254.

The product of its digits is 96768, while the sum is 40.

The square root of 228318673 is about 15110.2175033982. The cubic root of 228318673 is about 611.1959632616.

The spelling of 228318673 in words is "two hundred twenty-eight million, three hundred eighteen thousand, six hundred seventy-three".