228919918235080 has 192 divisors, whose sum is σ = 560975424871680. Its totient is φ = 84007620403200.

The previous prime is 228919918235023. The next prime is 228919918235081. The reversal of 228919918235080 is 80532819919822.

It is a junction number, because it is equal to n+sod(n) for n = 228919918234997 and 228919918235015.

It is not an unprimeable number, because it can be changed into a prime (228919918235081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 554800929 + ... + 555213391.

It is an arithmetic number, because the mean of its divisors is an integer number (2921747004540).

Almost surely, 2^{228919918235080} is an apocalyptic number.

228919918235080 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 228919918235080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280487712435840).

228919918235080 is an abundant number, since it is smaller than the sum of its proper divisors (332055506636600).

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

228919918235080 is a wasteful number, since it uses less digits than its factorization.

228919918235080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413720 (or 413699 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 67.

The spelling of 228919918235080 in words is "two hundred twenty-eight trillion, nine hundred nineteen billion, nine hundred eighteen million, two hundred thirty-five thousand, eighty".