28284884168 has 36 divisors (see below), whose sum is σ = 53674097715. Its totient is φ = 13973810688.

The previous prime is 28284884167. The next prime is 28284884207. The reversal of 28284884168 is 86148848282.

It is a happy number.

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 5 ways, for example, as 1044484 + 28283839684 = 1022^2 + 168178^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=118922.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28284884167) 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, 46141430 + ... + 46142042.

Almost surely, 2^28284884168 is an apocalyptic number.

It is an amenable number.

28284884168 is a deficient number, since it is larger than the sum of its proper divisors (25389213547).

28284884168 is an frugal number, since it uses more digits than its factorization.

28284884168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 712 counting only the distinct ones).

The product of its digits is 12582912, while the sum is 59.

The spelling of 28284884168 in words is "twenty-eight billion, two hundred eighty-four million, eight hundred eighty-four thousand, one hundred sixty-eight".