228145183 has 8 divisors (see below), whose sum is σ = 261450752. Its totient is φ = 195017976.

The previous prime is 228145123. The next prime is 228145187. The reversal of 228145183 is 381541822.

It is a happy number.

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 228145183 - 2⁹ = 228144671 is a prime.

It is a super-2 number, since 2×228145183² = 104100449052206978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228145187) 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, 41835 + ... + 46972.

It is an arithmetic number, because the mean of its divisors is an integer number (32681344).

Almost surely, 2^228145183 is an apocalyptic number.

228145183 is a deficient number, since it is larger than the sum of its proper divisors (33305569).

228145183 is an equidigital number, since it uses as much as digits as its factorization.

228145183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89181.

The product of its digits is 15360, while the sum is 34.

The square root of 228145183 is about 15104.4755950016. The cubic root of 228145183 is about 611.0411164486.

The spelling of 228145183 in words is "two hundred twenty-eight million, one hundred forty-five thousand, one hundred eighty-three".