28547646131 has 8 divisors (see below), whose sum is σ = 29045660400. Its totient is φ = 28050103840.

The previous prime is 28547646119. The next prime is 28547646187. The reversal of 28547646131 is 13164674582.

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 28547646131 - 2¹⁸ = 28547383987 is a prime.

It is a super-2 number, since 2×28547646131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28547640131) 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, 5141 + ... + 239001.

It is an arithmetic number, because the mean of its divisors is an integer number (3630707550).

Almost surely, 2^28547646131 is an apocalyptic number.

28547646131 is a deficient number, since it is larger than the sum of its proper divisors (498014269).

28547646131 is a wasteful number, since it uses less digits than its factorization.

28547646131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235989.

The product of its digits is 967680, while the sum is 47.

The spelling of 28547646131 in words is "twenty-eight billion, five hundred forty-seven million, six hundred forty-six thousand, one hundred thirty-one".