228681172830 has 128 divisors (see below), whose sum is σ = 624214356480. Its totient is φ = 53126760960.

The previous prime is 228681172829. The next prime is 228681172831. The reversal of 228681172830 is 38271186822.

It is an interprime number because it is at equal distance from previous prime (228681172829) and next prime (228681172831).

It is a self number, because there is not a number n which added to its sum of digits gives 228681172830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228681172831) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 600036 + ... + 904104.

It is an arithmetic number, because the mean of its divisors is an integer number (4876674660).

Almost surely, 2^228681172830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228681172830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312107178240).

228681172830 is an abundant number, since it is smaller than the sum of its proper divisors (395533183650).

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

228681172830 is a wasteful number, since it uses less digits than its factorization.

228681172830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304186.

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 228681172830 in words is "two hundred twenty-eight billion, six hundred eighty-one million, one hundred seventy-two thousand, eight hundred thirty".