228477184128 has 72 divisors (see below), whose sum is σ = 657513585495. Its totient is φ = 76153653504.

The previous prime is 228477184097. The next prime is 228477184129. The reversal of 228477184128 is 821481774822.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 114238592064 + 114238592064 = 337992^2 + 337992^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=337992.

It is a super-3 number, since 3×228477184128³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (228477184129) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16216575 + ... + 16230657.

Almost surely, 2^228477184128 is an apocalyptic number.

It is an amenable number.

228477184128 is an abundant number, since it is smaller than the sum of its proper divisors (429036401367).

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

228477184128 is an frugal number, since it uses more digits than its factorization.

228477184128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28186 (or 14088 counting only the distinct ones).

The product of its digits is 3211264, while the sum is 54.

The spelling of 228477184128 in words is "two hundred twenty-eight billion, four hundred seventy-seven million, one hundred eighty-four thousand, one hundred twenty-eight".