28847838847 has 2 divisors, whose sum is σ = 28847838848. Its totient is φ = 28847838846.

The previous prime is 28847838841. The next prime is 28847838881. The reversal of 28847838847 is 74883874882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28847838847 - 2²³ = 28839450239 is a prime.

It is a super-2 number, since 2×28847838847² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28847838841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14423919423 + 14423919424.

It is an arithmetic number, because the mean of its divisors is an integer number (14423919424).

Almost surely, 2^28847838847 is an apocalyptic number.

28847838847 is a deficient number, since it is larger than the sum of its proper divisors (1).

28847838847 is an equidigital number, since it uses as much as digits as its factorization.

28847838847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 154140672, while the sum is 67.

The spelling of 28847838847 in words is "twenty-eight billion, eight hundred forty-seven million, eight hundred thirty-eight thousand, eight hundred forty-seven".