228420346838 has 8 divisors (see below), whose sum is σ = 344930054400. Its totient is φ = 113443662040.

The previous prime is 228420346837. The next prime is 228420346841. The reversal of 228420346838 is 838643024822.

228420346838 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228420346837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383255318 + ... + 383255913.

It is an arithmetic number, because the mean of its divisors is an integer number (43116256800).

Almost surely, 2^228420346838 is an apocalyptic number.

228420346838 is a deficient number, since it is larger than the sum of its proper divisors (116509707562).

228420346838 is a wasteful number, since it uses less digits than its factorization.

228420346838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766511382.

The product of its (nonzero) digits is 3538944, while the sum is 50.

The spelling of 228420346838 in words is "two hundred twenty-eight billion, four hundred twenty million, three hundred forty-six thousand, eight hundred thirty-eight".