228347857 has 8 divisors (see below), whose sum is σ = 234360000. Its totient is φ = 222413520.

The previous prime is 228347851. The next prime is 228347863. The reversal of 228347857 is 758743822.

It is an interprime number because it is at equal distance from previous prime (228347851) and next prime (228347863).

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 228347857 - 2³ = 228347849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228347851) 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, 13482 + ... + 25267.

It is an arithmetic number, because the mean of its divisors is an integer number (29295000).

Almost surely, 2^228347857 is an apocalyptic number.

It is an amenable number.

228347857 is a deficient number, since it is larger than the sum of its proper divisors (6012143).

228347857 is an equidigital number, since it uses as much as digits as its factorization.

228347857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38903.

The product of its digits is 752640, while the sum is 46.

The square root of 228347857 is about 15111.1831767072. The cubic root of 228347857 is about 611.2220034489. Note that the first 3 decimals are identical.

The spelling of 228347857 in words is "two hundred twenty-eight million, three hundred forty-seven thousand, eight hundred fifty-seven".