28684488767 has 8 divisors (see below), whose sum is σ = 31296524880. Its totient is φ = 26073178560.

The previous prime is 28684488733. The next prime is 28684488769. The reversal of 28684488767 is 76788448682.

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

It is not a de Polignac number, because 28684488767 - 2²⁴ = 28667711551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28684488697 and 28684488706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28684488769) 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, 97142 + ... + 258467.

It is an arithmetic number, because the mean of its divisors is an integer number (3912065610).

Almost surely, 2^28684488767 is an apocalyptic number.

28684488767 is a deficient number, since it is larger than the sum of its proper divisors (2612036113).

28684488767 is a wasteful number, since it uses less digits than its factorization.

28684488767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362953.

The product of its digits is 231211008, while the sum is 68.

The spelling of 28684488767 in words is "twenty-eight billion, six hundred eighty-four million, four hundred eighty-eight thousand, seven hundred sixty-seven".