228758538 has 32 divisors (see below), whose sum is σ = 469827072. Its totient is φ = 74214000.

The previous prime is 228758513. The next prime is 228758539. The reversal of 228758538 is 835857822.

It is not an unprimeable number, because it can be changed into a prime (228758539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78813 + ... + 81663.

It is an arithmetic number, because the mean of its divisors is an integer number (14682096).

Almost surely, 2^228758538 is an apocalyptic number.

228758538 is an abundant number, since it is smaller than the sum of its proper divisors (241068534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228758538 is a wasteful number, since it uses less digits than its factorization.

228758538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210.

The product of its digits is 1075200, while the sum is 48.

The square root of 228758538 is about 15124.7657171938. The cubic root of 228758538 is about 611.5882092503.

It can be divided in two parts, 22875 and 8538, that added together give a palindrome (31413).

The spelling of 228758538 in words is "two hundred twenty-eight million, seven hundred fifty-eight thousand, five hundred thirty-eight".