28748135139 has 8 divisors (see below), whose sum is σ = 38380437072. Its totient is φ = 19140628320.

The previous prime is 28748135113. The next prime is 28748135167. The reversal of 28748135139 is 93153184782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28748135139 - 2¹⁹ = 28747610851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28748135091 and 28748135100.

It is not an unprimeable number, because it can be changed into a prime (28748135239) 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 7 ways as a sum of consecutive naturals, for example, 6196072 + ... + 6200709.

It is an arithmetic number, because the mean of its divisors is an integer number (4797554634).

Almost surely, 2^28748135139 is an apocalyptic number.

28748135139 is a deficient number, since it is larger than the sum of its proper divisors (9632301933).

28748135139 is a wasteful number, since it uses less digits than its factorization.

28748135139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12397557.

The product of its digits is 1451520, while the sum is 51.

The spelling of 28748135139 in words is "twenty-eight billion, seven hundred forty-eight million, one hundred thirty-five thousand, one hundred thirty-nine".