228500143 has 8 divisors (see below), whose sum is σ = 229825296. Its totient is φ = 227179200.

The previous prime is 228500117. The next prime is 228500149. The reversal of 228500143 is 341005822.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228500143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228500149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214833 + ... + 215893.

It is an arithmetic number, because the mean of its divisors is an integer number (28728162).

Almost surely, 2^228500143 is an apocalyptic number.

228500143 is a deficient number, since it is larger than the sum of its proper divisors (1325153).

228500143 is a wasteful number, since it uses less digits than its factorization.

228500143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 228500143 is about 15116.2211878498. The cubic root of 228500143 is about 611.3578486327.

Adding to 228500143 its reverse (341005822), we get a palindrome (569505965).

The spelling of 228500143 in words is "two hundred twenty-eight million, five hundred thousand, one hundred forty-three".