228157873 has 8 divisors (see below), whose sum is σ = 238168040. Its totient is φ = 218350080.

The previous prime is 228157859. The next prime is 228157879. The reversal of 228157873 is 378751822.

It can be written as a sum of positive squares in 4 ways, for example, as 2166784 + 225991089 = 1472^2 + 15033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228157873 - 2⁹ = 228157361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228157879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48288 + ... + 52801.

It is an arithmetic number, because the mean of its divisors is an integer number (29771005).

Almost surely, 2^228157873 is an apocalyptic number.

It is an amenable number.

228157873 is a deficient number, since it is larger than the sum of its proper divisors (10010167).

228157873 is a wasteful number, since it uses less digits than its factorization.

228157873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101187.

The product of its digits is 188160, while the sum is 43.

The square root of 228157873 is about 15104.8956633272. The cubic root of 228157873 is about 611.0524454452.

The spelling of 228157873 in words is "two hundred twenty-eight million, one hundred fifty-seven thousand, eight hundred seventy-three".