228272528 has 20 divisors (see below), whose sum is σ = 482485488. Its totient is φ = 103760160.

The previous prime is 228272501. The next prime is 228272531. The reversal of 228272528 is 825272822.

It is a junction number, because it is equal to n+sod(n) for n = 228272491 and 228272500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648326 + ... + 648677.

Almost surely, 2^228272528 is an apocalyptic number.

It is an amenable number.

228272528 is an abundant number, since it is smaller than the sum of its proper divisors (254212960).

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

228272528 is a wasteful number, since it uses less digits than its factorization.

228272528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297022 (or 1297016 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 228272528 is about 15108.6904793235. The cubic root of 228272528 is about 611.1547846498.

The spelling of 228272528 in words is "two hundred twenty-eight million, two hundred seventy-two thousand, five hundred twenty-eight".