228117818 has 8 divisors (see below), whose sum is σ = 357054048. Its totient is φ = 109099804.

The previous prime is 228117811. The next prime is 228117821. The reversal of 228117818 is 818711822.

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

It is a super-2 number, since 2×228117818² = 104075477778162248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228117811) 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, 2479496 + ... + 2479587.

It is an arithmetic number, because the mean of its divisors is an integer number (44631756).

Almost surely, 2^228117818 is an apocalyptic number.

228117818 is a deficient number, since it is larger than the sum of its proper divisors (128936230).

228117818 is a wasteful number, since it uses less digits than its factorization.

228117818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959108.

The product of its digits is 14336, while the sum is 38.

The square root of 228117818 is about 15103.5697105022. The cubic root of 228117818 is about 611.0166849170.

The spelling of 228117818 in words is "two hundred twenty-eight million, one hundred seventeen thousand, eight hundred eighteen".