228773428 has 48 divisors (see below), whose sum is σ = 448698880. Its totient is φ = 101347200.

The previous prime is 228773417. The next prime is 228773449. The reversal of 228773428 is 824377822.

It is a happy number.

228773428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223558 + ... + 224578.

Almost surely, 2^228773428 is an apocalyptic number.

It is an amenable number.

228773428 is a deficient number, since it is larger than the sum of its proper divisors (219925452).

228773428 is a wasteful number, since it uses less digits than its factorization.

228773428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1206 counting only the distinct ones).

The product of its digits is 301056, while the sum is 43.

The square root of 228773428 is about 15125.2579482136. The cubic root of 228773428 is about 611.6014784831.

The spelling of 228773428 in words is "two hundred twenty-eight million, seven hundred seventy-three thousand, four hundred twenty-eight".