228117838 has 32 divisors (see below), whose sum is σ = 396950400. Its totient is φ = 97415136.

The previous prime is 228117833. The next prime is 228117847. The reversal of 228117838 is 838711822.

It is a self number, because there is not a number n which added to its sum of digits gives 228117838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228117833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15873 + ... + 26611.

It is an arithmetic number, because the mean of its divisors is an integer number (12404700).

Almost surely, 2^228117838 is an apocalyptic number.

228117838 is a deficient number, since it is larger than the sum of its proper divisors (168832562).

228117838 is a wasteful number, since it uses less digits than its factorization.

228117838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10816.

The product of its digits is 43008, while the sum is 40.

The square root of 228117838 is about 15103.5703725973. The cubic root of 228117838 is about 611.0167027738.

The spelling of 228117838 in words is "two hundred twenty-eight million, one hundred seventeen thousand, eight hundred thirty-eight".