28463839144 has 16 divisors (see below), whose sum is σ = 57475060020. Its totient is φ = 13137156480.

The previous prime is 28463839111. The next prime is 28463839169. The reversal of 28463839144 is 44193836482.

It can be written as a sum of positive squares in 2 ways, for example, as 27512856900 + 950982244 = 165870^2 + 30838^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 28463839091 and 28463839100.

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 3 ways as a sum of consecutive naturals, for example, 136845277 + ... + 136845484.

Almost surely, 2^28463839144 is an apocalyptic number.

It is an amenable number.

28463839144 is an abundant number, since it is smaller than the sum of its proper divisors (29011220876).

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

28463839144 is a wasteful number, since it uses less digits than its factorization.

28463839144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273690780 (or 273690776 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 52.

The spelling of 28463839144 in words is "twenty-eight billion, four hundred sixty-three million, eight hundred thirty-nine thousand, one hundred forty-four".