228142857 has 8 divisors (see below), whose sum is σ = 314003200. Its totient is φ = 147188880.

The previous prime is 228142843. The next prime is 228142897. The reversal of 228142857 is 758241822.

228142857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 228142857 - 2¹⁰ = 228141833 is a prime.

It is a Duffinian number.

228142857 is a modest number, since divided by 142857 gives 228 as remainder.

It is not an unprimeable number, because it can be changed into a prime (228142897) 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, 1226482 + ... + 1226667.

It is an arithmetic number, because the mean of its divisors is an integer number (39250400).

Almost surely, 2^228142857 is an apocalyptic number.

It is an amenable number.

228142857 is a deficient number, since it is larger than the sum of its proper divisors (85860343).

228142857 is a wasteful number, since it uses less digits than its factorization.

228142857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453183.

The product of its digits is 71680, while the sum is 39.

The square root of 228142857 is about 15104.3985977595. The cubic root of 228142857 is about 611.0390398667.

The spelling of 228142857 in words is "two hundred twenty-eight million, one hundred forty-two thousand, eight hundred fifty-seven".