228117842 has 4 divisors (see below), whose sum is σ = 342176766. Its totient is φ = 114058920.

The previous prime is 228117833. The next prime is 228117847. The reversal of 228117842 is 248711822.

228117842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 225870841 + 2247001 = 15029^2 + 1499^2 .

It is not an unprimeable number, because it can be changed into a prime (228117847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57029459 + ... + 57029462.

Almost surely, 2^228117842 is an apocalyptic number.

228117842 is a deficient number, since it is larger than the sum of its proper divisors (114058924).

228117842 is a wasteful number, since it uses less digits than its factorization.

228117842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114058923.

The product of its digits is 14336, while the sum is 35.

The square root of 228117842 is about 15103.5705050164. The cubic root of 228117842 is about 611.0167063451.

The spelling of 228117842 in words is "two hundred twenty-eight million, one hundred seventeen thousand, eight hundred forty-two".