228705117 has 8 divisors (see below), whose sum is σ = 307790496. Its totient is φ = 151044912.

The previous prime is 228705101. The next prime is 228705121. The reversal of 228705117 is 711507822.

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

It is not a de Polignac number, because 228705117 - 2⁴ = 228705101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228705187) 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, 355918 + ... + 356559.

It is an arithmetic number, because the mean of its divisors is an integer number (38473812).

Almost surely, 2^228705117 is an apocalyptic number.

It is an amenable number.

228705117 is a deficient number, since it is larger than the sum of its proper divisors (79085379).

228705117 is a wasteful number, since it uses less digits than its factorization.

228705117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712587.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 228705117 is about 15122.9996032533. Note that the first 3 decimals coincide. The cubic root of 228705117 is about 611.5405983537.

It can be divided in two parts, 228705 and 117, that added together give a palindrome (228822).

The spelling of 228705117 in words is "two hundred twenty-eight million, seven hundred five thousand, one hundred seventeen".