28882539857 has 2 divisors, whose sum is σ = 28882539858. Its totient is φ = 28882539856.

The previous prime is 28882539817. The next prime is 28882539877. The reversal of 28882539857 is 75893528882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18207724096 + 10674815761 = 134936^2 + 103319^2 .

It is a cyclic number.

It is not a de Polignac number, because 28882539857 - 2¹⁰ = 28882538833 is a prime.

It is a super-2 number, since 2×28882539857² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28882539793 and 28882539802.

It is not a weakly prime, because it can be changed into another prime (28882539817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14441269928 + 14441269929.

It is an arithmetic number, because the mean of its divisors is an integer number (14441269929).

Almost surely, 2^28882539857 is an apocalyptic number.

It is an amenable number.

28882539857 is a deficient number, since it is larger than the sum of its proper divisors (1).

28882539857 is an equidigital number, since it uses as much as digits as its factorization.

28882539857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77414400, while the sum is 65.

The spelling of 28882539857 in words is "twenty-eight billion, eight hundred eighty-two million, five hundred thirty-nine thousand, eight hundred fifty-seven".