228652688 has 80 divisors (see below), whose sum is σ = 514520640. Its totient is φ = 97344000.

The previous prime is 228652667. The next prime is 228652741. The reversal of 228652688 is 886256822.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 337406 + ... + 338082.

It is an arithmetic number, because the mean of its divisors is an integer number (6431508).

Almost surely, 2^228652688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228652688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257260320).

228652688 is an abundant number, since it is smaller than the sum of its proper divisors (285867952).

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

228652688 is a wasteful number, since it uses less digits than its factorization.

228652688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 810 counting only the distinct ones).

The product of its digits is 737280, while the sum is 47.

The square root of 228652688 is about 15121.2660845579. The cubic root of 228652688 is about 611.4938643573.

The spelling of 228652688 in words is "two hundred twenty-eight million, six hundred fifty-two thousand, six hundred eighty-eight".