28384728292 has 12 divisors (see below), whose sum is σ = 52287657520. Its totient is φ = 13445397576.

The previous prime is 28384728263. The next prime is 28384728293. The reversal of 28384728292 is 29282748382.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28384728293) 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 3 ways as a sum of consecutive naturals, for example, 186741558 + ... + 186741709.

Almost surely, 2^28384728292 is an apocalyptic number.

It is an amenable number.

28384728292 is a deficient number, since it is larger than the sum of its proper divisors (23902929228).

28384728292 is a wasteful number, since it uses less digits than its factorization.

28384728292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373483290 (or 373483288 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 55.

The spelling of 28384728292 in words is "twenty-eight billion, three hundred eighty-four million, seven hundred twenty-eight thousand, two hundred ninety-two".