28084015731 has 8 divisors (see below), whose sum is σ = 37476746640. Its totient is φ = 18706980992.

The previous prime is 28084015699. The next prime is 28084015777. The reversal of 28084015731 is 13751048082.

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

It is a cyclic number.

It is not a de Polignac number, because 28084015731 - 2⁵ = 28084015699 is a prime.

It is a super-2 number, since 2×28084015731² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28084015731.

It is not an unprimeable number, because it can be changed into a prime (28084013731) 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, 3919866 + ... + 3927023.

It is an arithmetic number, because the mean of its divisors is an integer number (4684593330).

Almost surely, 2^28084015731 is an apocalyptic number.

28084015731 is a deficient number, since it is larger than the sum of its proper divisors (9392730909).

28084015731 is a wasteful number, since it uses less digits than its factorization.

28084015731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7848085.

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 28084015731 in words is "twenty-eight billion, eighty-four million, fifteen thousand, seven hundred thirty-one".