228066442 has 12 divisors (see below), whose sum is σ = 353494098. Its totient is φ = 110353800.

The previous prime is 228066439. The next prime is 228066451. The reversal of 228066442 is 244660822.

It can be written as a sum of positive squares in only one way, i.e., 193738561 + 34327881 = 13919^2 + 5859^2 .

It is a junction number, because it is equal to n+sod(n) for n = 228066398 and 228066407.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57409 + ... + 61252.

Almost surely, 2^228066442 is an apocalyptic number.

228066442 is a deficient number, since it is larger than the sum of its proper divisors (125427656).

228066442 is a wasteful number, since it uses less digits than its factorization.

228066442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118725 (or 118694 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 228066442 is about 15101.8688247515. The cubic root of 228066442 is about 610.9708110342.

The spelling of 228066442 in words is "two hundred twenty-eight million, sixty-six thousand, four hundred forty-two".