28842331389 has 8 divisors (see below), whose sum is σ = 38486420832. Its totient is φ = 19213231440.

The previous prime is 28842331351. The next prime is 28842331403. The reversal of 28842331389 is 98313324882.

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

It is not a de Polignac number, because 28842331389 - 2⁹ = 28842330877 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28842331339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3742882 + ... + 3750579.

It is an arithmetic number, because the mean of its divisors is an integer number (4810802604).

Almost surely, 2^28842331389 is an apocalyptic number.

It is an amenable number.

28842331389 is a deficient number, since it is larger than the sum of its proper divisors (9644089443).

28842331389 is a wasteful number, since it uses less digits than its factorization.

28842331389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7494747.

The product of its digits is 1990656, while the sum is 51.

The spelling of 28842331389 in words is "twenty-eight billion, eight hundred forty-two million, three hundred thirty-one thousand, three hundred eighty-nine".