28756324047 has 8 divisors (see below), whose sum is σ = 41827380480. Its totient is φ = 17428075160.

The previous prime is 28756324033. The next prime is 28756324063. The reversal of 28756324047 is 74042365782.

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 28756324047 - 2⁶ = 28756323983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28756323987 and 28756324005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28756324027) 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, 435701847 + ... + 435701912.

It is an arithmetic number, because the mean of its divisors is an integer number (5228422560).

Almost surely, 2^28756324047 is an apocalyptic number.

28756324047 is a deficient number, since it is larger than the sum of its proper divisors (13071056433).

28756324047 is a wasteful number, since it uses less digits than its factorization.

28756324047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871403773.

The product of its (nonzero) digits is 2257920, while the sum is 48.

The spelling of 28756324047 in words is "twenty-eight billion, seven hundred fifty-six million, three hundred twenty-four thousand, forty-seven".