28645835047 has 8 divisors (see below), whose sum is σ = 29893870944. Its totient is φ = 27398012928.

The previous prime is 28645835041. The next prime is 28645835081. The reversal of 28645835047 is 74053854682.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28645835047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28645834985 and 28645835003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28645835041) 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, 259423 + ... + 352975.

It is an arithmetic number, because the mean of its divisors is an integer number (3736733868).

Almost surely, 2^28645835047 is an apocalyptic number.

28645835047 is a deficient number, since it is larger than the sum of its proper divisors (1248035897).

28645835047 is a wasteful number, since it uses less digits than its factorization.

28645835047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106889.

The product of its (nonzero) digits is 6451200, while the sum is 52.

The spelling of 28645835047 in words is "twenty-eight billion, six hundred forty-five million, eight hundred thirty-five thousand, forty-seven".