228116646 has 24 divisors (see below), whose sum is σ = 499351944. Its totient is φ = 75254400.

The previous prime is 228116633. The next prime is 228116683. The reversal of 228116646 is 646611822.

228116646 is a `hidden beast` number, since 2 + 2 + 8 + 1 + 1 + 6 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 228116646.

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 11 ways as a sum of consecutive naturals, for example, 63580 + ... + 67071.

It is an arithmetic number, because the mean of its divisors is an integer number (20806331).

Almost surely, 2^228116646 is an apocalyptic number.

228116646 is an abundant number, since it is smaller than the sum of its proper divisors (271235298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228116646 is a wasteful number, since it uses less digits than its factorization.

228116646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130756 (or 130753 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 228116646 is about 15103.5309116776. The cubic root of 228116646 is about 611.0156385092.

The spelling of 228116646 in words is "two hundred twenty-eight million, one hundred sixteen thousand, six hundred forty-six".