228857 has 4 divisors (see below), whose sum is σ = 230736. Its totient is φ = 226980.

The previous prime is 228853. The next prime is 228859. The reversal of 228857 is 758822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228857 - 2² = 228853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743 + ... + 1004.

It is an arithmetic number, because the mean of its divisors is an integer number (57684).

2²²⁸⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

228857 is a deficient number, since it is larger than the sum of its proper divisors (1879).

228857 is a wasteful number, since it uses less digits than its factorization.

228857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878.

The product of its digits is 8960, while the sum is 32.

The square root of 228857 is about 478.3900082569. The cubic root of 228857 is about 61.1675943040.

The spelling of 228857 in words is "two hundred twenty-eight thousand, eight hundred fifty-seven".