28322731165 has 8 divisors (see below), whose sum is σ = 34013369088. Its totient is φ = 22640790480.

The previous prime is 28322731141. The next prime is 28322731211. The reversal of 28322731165 is 56113722382.

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

It is not a de Polignac number, because 28322731165 - 2¹³ = 28322722973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167141 + ... + 2180170.

It is an arithmetic number, because the mean of its divisors is an integer number (4251671136).

Almost surely, 2^28322731165 is an apocalyptic number.

It is an amenable number.

28322731165 is a deficient number, since it is larger than the sum of its proper divisors (5690637923).

28322731165 is a wasteful number, since it uses less digits than its factorization.

28322731165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348619.

The product of its digits is 120960, while the sum is 40.

The spelling of 28322731165 in words is "twenty-eight billion, three hundred twenty-two million, seven hundred thirty-one thousand, one hundred sixty-five".