228232528 has 20 divisors (see below), whose sum is σ = 446581908. Its totient is φ = 112985600.

The previous prime is 228232513. The next prime is 228232559. The reversal of 228232528 is 825232822.

It can be written as a sum of positive squares in 2 ways, for example, as 136609344 + 91623184 = 11688^2 + 9572^2 .

It is a junction number, because it is equal to n+sod(n) for n = 228232493 and 228232502.

It is a congruent number.

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, 69001 + ... + 72232.

Almost surely, 2^228232528 is an apocalyptic number.

It is an amenable number.

228232528 is a deficient number, since it is larger than the sum of its proper divisors (218349380).

228232528 is a wasteful number, since it uses less digits than its factorization.

228232528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141342 (or 141336 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 228232528 is about 15107.3666798685. The cubic root of 228232528 is about 611.1190851877.

The spelling of 228232528 in words is "two hundred twenty-eight million, two hundred thirty-two thousand, five hundred twenty-eight".