228405535442 has 54 divisors (see below), whose sum is σ = 416824342263. Its totient is φ = 93587474904.

The previous prime is 228405535361. The next prime is 228405535453. The reversal of 228405535442 is 244535504822.

It is a happy number.

228405535442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 114202767721 + 114202767721 = 337939^2 + 337939^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=337939.

It is a junction number, because it is equal to n+sod(n) for n = 228405535393 and 228405535402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 108815309 + ... + 108817407.

Almost surely, 2^228405535442 is an apocalyptic number.

228405535442 is a deficient number, since it is larger than the sum of its proper divisors (188418806821).

228405535442 is an frugal number, since it uses more digits than its factorization.

228405535442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260 (or 2131 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 44.

The spelling of 228405535442 in words is "two hundred twenty-eight billion, four hundred five million, five hundred thirty-five thousand, four hundred forty-two".