28363691148 has 144 divisors (see below), whose sum is σ = 72654220800. Its totient is φ = 8607755520.

The previous prime is 28363691143. The next prime is 28363691159. The reversal of 28363691148 is 84119636382.

It is a self number, because there is not a number n which added to its sum of digits gives 28363691148.

It is not an unprimeable number, because it can be changed into a prime (28363691143) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 67371978 + ... + 67372398.

It is an arithmetic number, because the mean of its divisors is an integer number (504543200).

Almost surely, 2^28363691148 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 28363691148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36327110400).

28363691148 is an abundant number, since it is smaller than the sum of its proper divisors (44290529652).

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

28363691148 is a wasteful number, since it uses less digits than its factorization.

28363691148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 817 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The spelling of 28363691148 in words is "twenty-eight billion, three hundred sixty-three million, six hundred ninety-one thousand, one hundred forty-eight".