228658673 has 4 divisors (see below), whose sum is σ = 240693360. Its totient is φ = 216623988.

The previous prime is 228658669. The next prime is 228658691. The reversal of 228658673 is 376856822.

It is a happy number.

228658673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 376856822 = 2 ⋅188428411.

It is a cyclic number.

It is not a de Polignac number, because 228658673 - 2² = 228658669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228658603) 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, 6017315 + ... + 6017352.

It is an arithmetic number, because the mean of its divisors is an integer number (60173340).

Almost surely, 2^228658673 is an apocalyptic number.

It is an amenable number.

228658673 is a deficient number, since it is larger than the sum of its proper divisors (12034687).

228658673 is a wasteful number, since it uses less digits than its factorization.

228658673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12034686.

The product of its digits is 967680, while the sum is 47.

The square root of 228658673 is about 15121.4639833582. The cubic root of 228658673 is about 611.4991996089.

The spelling of 228658673 in words is "two hundred twenty-eight million, six hundred fifty-eight thousand, six hundred seventy-three".