228067128820 has 96 divisors (see below), whose sum is σ = 512345433600. Its totient is φ = 84976625664.

The previous prime is 228067128781. The next prime is 228067128823. The reversal of 228067128820 is 28821760822.

It is a super-3 number, since 3×228067128820³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228067128823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38502379 + ... + 38508301.

It is an arithmetic number, because the mean of its divisors is an integer number (5336931600).

Almost surely, 2^228067128820 is an apocalyptic number.

228067128820 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 228067128820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256172716800).

228067128820 is an abundant number, since it is smaller than the sum of its proper divisors (284278304780).

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

228067128820 is a wasteful number, since it uses less digits than its factorization.

228067128820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7097 (or 7095 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The spelling of 228067128820 in words is "two hundred twenty-eight billion, sixty-seven million, one hundred twenty-eight thousand, eight hundred twenty".