28733273565 has 16 divisors (see below), whose sum is σ = 46096499328. Its totient is φ = 15283325376.

The previous prime is 28733273533. The next prime is 28733273567. The reversal of 28733273565 is 56537233782.

It is not a de Polignac number, because 28733273565 - 2⁵ = 28733273533 is a prime.

It is a super-2 number, since 2×28733273565² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28733273567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2562169 + ... + 2573358.

It is an arithmetic number, because the mean of its divisors is an integer number (2881031208).

Almost surely, 2^28733273565 is an apocalyptic number.

It is an amenable number.

28733273565 is a deficient number, since it is larger than the sum of its proper divisors (17363225763).

28733273565 is a wasteful number, since it uses less digits than its factorization.

28733273565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135908.

The product of its digits is 6350400, while the sum is 51.

The spelling of 28733273565 in words is "twenty-eight billion, seven hundred thirty-three million, two hundred seventy-three thousand, five hundred sixty-five".