228143843 has 8 divisors (see below), whose sum is σ = 234682896. Its totient is φ = 221695200.

The previous prime is 228143833. The next prime is 228143857. The reversal of 228143843 is 348341822.

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 228143843 - 2⁴ = 228143827 is a prime.

It is a super-2 number, since 2×228143843² = 104099226197617298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228143833) 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, 17468 + ... + 27593.

It is an arithmetic number, because the mean of its divisors is an integer number (29335362).

Almost surely, 2^228143843 is an apocalyptic number.

228143843 is a deficient number, since it is larger than the sum of its proper divisors (6539053).

228143843 is an equidigital number, since it uses as much as digits as its factorization.

228143843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45205.

The product of its digits is 36864, while the sum is 35.

The square root of 228143843 is about 15104.4312372231. The cubic root of 228143843 is about 611.0399201392.

The spelling of 228143843 in words is "two hundred twenty-eight million, one hundred forty-three thousand, eight hundred forty-three".