228800660 has 96 divisors (see below), whose sum is σ = 557383680. Its totient is φ = 78019200.

The previous prime is 228800659. The next prime is 228800683. The reversal of 228800660 is 66008822.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 530645 + ... + 531075.

It is an arithmetic number, because the mean of its divisors is an integer number (5806080).

Almost surely, 2^228800660 is an apocalyptic number.

228800660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228800660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278691840).

228800660 is an abundant number, since it is smaller than the sum of its proper divisors (328583020).

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

228800660 is a wasteful number, since it uses less digits than its factorization.

228800660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 228800660 is about 15126.1581374783. The cubic root of 228800660 is about 611.6257448075.

The spelling of 228800660 in words is "two hundred twenty-eight million, eight hundred thousand, six hundred sixty".