228864628 has 12 divisors (see below), whose sum is σ = 417926880. Its totient is φ = 109456952.

The previous prime is 228864617. The next prime is 228864637. The reversal of 228864628 is 826468822.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 1243738 + ... + 1243921.

It is an arithmetic number, because the mean of its divisors is an integer number (34827240).

Almost surely, 2^228864628 is an apocalyptic number.

It is an amenable number.

228864628 is a deficient number, since it is larger than the sum of its proper divisors (189062252).

228864628 is a wasteful number, since it uses less digits than its factorization.

228864628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487686 (or 2487684 counting only the distinct ones).

The product of its digits is 589824, while the sum is 46.

The square root of 228864628 is about 15128.2724724272. The cubic root of 228864628 is about 611.6827388594.

The spelling of 228864628 in words is "two hundred twenty-eight million, eight hundred sixty-four thousand, six hundred twenty-eight".