228504542 has 16 divisors (see below), whose sum is σ = 399717600. Its totient is φ = 97930224.

The previous prime is 228504541. The next prime is 228504557. The reversal of 228504542 is 245405822.

It is a junction number, because it is equal to n+sod(n) for n = 228504499 and 228504508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228504541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 165863 + ... + 167234.

It is an arithmetic number, because the mean of its divisors is an integer number (24982350).

Almost surely, 2^228504542 is an apocalyptic number.

228504542 is a deficient number, since it is larger than the sum of its proper divisors (171213058).

228504542 is an equidigital number, since it uses as much as digits as its factorization.

228504542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333120 (or 333106 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 228504542 is about 15116.3666930913. The cubic root of 228504542 is about 611.3617718190.

The spelling of 228504542 in words is "two hundred twenty-eight million, five hundred four thousand, five hundred forty-two".