228203128 has 8 divisors (see below), whose sum is σ = 427880880. Its totient is φ = 114101560.

The previous prime is 228203083. The next prime is 228203147. The reversal of 228203128 is 821302822.

228203128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 228203096 and 228203105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14262688 + ... + 14262703.

It is an arithmetic number, because the mean of its divisors is an integer number (53485110).

Almost surely, 2^228203128 is an apocalyptic number.

It is an amenable number.

228203128 is a deficient number, since it is larger than the sum of its proper divisors (199677752).

228203128 is a wasteful number, since it uses less digits than its factorization.

228203128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28525397 (or 28525393 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 228203128 is about 15106.3936133016. The cubic root of 228203128 is about 611.0928434233.

The spelling of 228203128 in words is "two hundred twenty-eight million, two hundred three thousand, one hundred twenty-eight".