228387205317180 has 1152 divisors, whose sum is σ = 882408990597120. Its totient is φ = 43572911800320.

The previous prime is 228387205317169. The next prime is 228387205317241. The reversal of 228387205317180 is 81713502783822.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 228387205317180.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1643275852 + ... + 1643414828.

It is an arithmetic number, because the mean of its divisors is an integer number (765980026560).

Almost surely, 2^{228387205317180} is an apocalyptic number.

228387205317180 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 228387205317180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441204495298560).

228387205317180 is an abundant number, since it is smaller than the sum of its proper divisors (654021785279940).

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

228387205317180 is a wasteful number, since it uses less digits than its factorization.

228387205317180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139139 (or 139130 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 228387205317180 in words is "two hundred twenty-eight trillion, three hundred eighty-seven billion, two hundred five million, three hundred seventeen thousand, one hundred eighty".