228944728 has 32 divisors (see below), whose sum is σ = 441801360. Its totient is φ = 111162240.

The previous prime is 228944719. The next prime is 228944743. The reversal of 228944728 is 827449822.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60426 + ... + 64102.

Almost surely, 2^228944728 is an apocalyptic number.

It is an amenable number.

228944728 is a deficient number, since it is larger than the sum of its proper divisors (212856632).

228944728 is a wasteful number, since it uses less digits than its factorization.

228944728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907 (or 3903 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 228944728 is about 15130.9196019277. The cubic root of 228944728 is about 611.7540911881.

The spelling of 228944728 in words is "two hundred twenty-eight million, nine hundred forty-four thousand, seven hundred twenty-eight".