228030085440 has 140 divisors (see below), whose sum is σ = 811143222516. Its totient is φ = 60808015872.

The previous prime is 228030085391. The next prime is 228030085447. The reversal of 228030085440 is 44580030822.

228030085440 is a `hidden beast` number, since 2 + 2 + 80 + 30 + 0 + 8 + 544 + 0 = 666.

228030085440 is digitally balanced in base 2, 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 2 ways, for example, as 158359427136 + 69670658304 = 397944^2 + 263952^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 228030085395 and 228030085404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228030085447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4372809 + ... + 4424648.

Almost surely, 2^228030085440 is an apocalyptic number.

228030085440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228030085440 is an abundant number, since it is smaller than the sum of its proper divisors (583113137076).

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

228030085440 is an equidigital number, since it uses as much as digits as its factorization.

228030085440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8797486 (or 8797467 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 228030085440 in words is "two hundred twenty-eight billion, thirty million, eighty-five thousand, four hundred forty".