228656816 has 20 divisors (see below), whose sum is σ = 443348112. Its totient is φ = 114244416.

The previous prime is 228656803. The next prime is 228656819. The reversal of 228656816 is 618656822.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (228656819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21266 + ... + 30158.

Almost surely, 2^228656816 is an apocalyptic number.

It is an amenable number.

228656816 is a deficient number, since it is larger than the sum of its proper divisors (214691296).

228656816 is a wasteful number, since it uses less digits than its factorization.

228656816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10508 (or 10502 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 228656816 is about 15121.4025804487. The cubic root of 228656816 is about 611.4975442200.

The spelling of 228656816 in words is "two hundred twenty-eight million, six hundred fifty-six thousand, eight hundred sixteen".