28183178528 has 54 divisors (see below), whose sum is σ = 56554440579. Its totient is φ = 13825208512.

The previous prime is 28183178519. The next prime is 28183178531. The reversal of 28183178528 is 82587138182.

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., 14091589264 + 14091589264 = 118708^2 + 118708^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=118708.

It is a super-2 number, since 2×28183178528² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28183178528.

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 8 ways as a sum of consecutive naturals, for example, 56029925 + ... + 56030427.

Almost surely, 2^28183178528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28183178528

28183178528 is an abundant number, since it is smaller than the sum of its proper divisors (28371262051).

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

28183178528 is an frugal number, since it uses more digits than its factorization.

28183178528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 564 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 53.

The spelling of 28183178528 in words is "twenty-eight billion, one hundred eighty-three million, one hundred seventy-eight thousand, five hundred twenty-eight".