228972231660 has 192 divisors, whose sum is σ = 688136537088. Its totient is φ = 56747851776.

The previous prime is 228972231659. The next prime is 228972231731. The reversal of 228972231660 is 66132279822.

228972231660 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11442624 + ... + 11462616.

It is an arithmetic number, because the mean of its divisors is an integer number (3584044464).

Almost surely, 2^228972231660 is an apocalyptic number.

228972231660 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 228972231660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344068268544).

228972231660 is an abundant number, since it is smaller than the sum of its proper divisors (459164305428).

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

228972231660 is a wasteful number, since it uses less digits than its factorization.

228972231660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20264 (or 20262 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 228972231660 in words is "two hundred twenty-eight billion, nine hundred seventy-two million, two hundred thirty-one thousand, six hundred sixty".