228665860 has 48 divisors (see below), whose sum is σ = 487992960. Its totient is φ = 89994240.

The previous prime is 228665851. The next prime is 228665867. The reversal of 228665860 is 68566822.

It is not an unprimeable number, because it can be changed into a prime (228665867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603151 + ... + 603529.

It is an arithmetic number, because the mean of its divisors is an integer number (10166520).

Almost surely, 2^228665860 is an apocalyptic number.

228665860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228665860 is an abundant number, since it is smaller than the sum of its proper divisors (259327100).

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

228665860 is a wasteful number, since it uses less digits than its factorization.

228665860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 228665860 is about 15121.7016238253. The cubic root of 228665860 is about 611.5056062449.

The spelling of 228665860 in words is "two hundred twenty-eight million, six hundred sixty-five thousand, eight hundred sixty".