228643506450 has 54 divisors (see below), whose sum is σ = 614316140607. Its totient is φ = 60968896800.

The previous prime is 228643506433. The next prime is 228643506503. The reversal of 228643506450 is 54605346822.

228643506450 is a `hidden beast` number, since 22 + 86 + 4 + 3 + 506 + 45 + 0 = 666.

228643506450 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 153077345001 + 75566161449 = 391251^2 + 274893^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=338115.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 228643506396 and 228643506405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10132180 + ... + 10154720.

Almost surely, 2^228643506450 is an apocalyptic number.

228643506450 is an abundant number, since it is smaller than the sum of its proper divisors (385672634157).

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

228643506450 is an frugal number, since it uses more digits than its factorization.

228643506450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45100 (or 22551 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 228643506450 in words is "two hundred twenty-eight billion, six hundred forty-three million, five hundred six thousand, four hundred fifty".