28723558747 has 8 divisors (see below), whose sum is σ = 31999721040. Its totient is φ = 25599776160.

The previous prime is 28723558733. The next prime is 28723558757. The reversal of 28723558747 is 74785532782.

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 28723558747 - 2¹¹ = 28723556699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28723558691 and 28723558700.

It is not an unprimeable number, because it can be changed into a prime (28723558757) 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, 38094529 + ... + 38095282.

It is an arithmetic number, because the mean of its divisors is an integer number (3999965130).

Almost surely, 2^28723558747 is an apocalyptic number.

28723558747 is a deficient number, since it is larger than the sum of its proper divisors (3276162293).

28723558747 is a wasteful number, since it uses less digits than its factorization.

28723558747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76189853.

The product of its digits is 26342400, while the sum is 58.

The spelling of 28723558747 in words is "twenty-eight billion, seven hundred twenty-three million, five hundred fifty-eight thousand, seven hundred forty-seven".