28300071857 has 2 divisors, whose sum is σ = 28300071858. Its totient is φ = 28300071856.

The previous prime is 28300071823. The next prime is 28300071869. The reversal of 28300071857 is 75817000382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19052556961 + 9247514896 = 138031^2 + 96164^2 .

It is a cyclic number.

It is not a de Polignac number, because 28300071857 - 2¹⁶ = 28300006321 is a prime.

It is a super-2 number, since 2×28300071857² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28300071817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14150035928 + 14150035929.

It is an arithmetic number, because the mean of its divisors is an integer number (14150035929).

Almost surely, 2^28300071857 is an apocalyptic number.

It is an amenable number.

28300071857 is a deficient number, since it is larger than the sum of its proper divisors (1).

28300071857 is an equidigital number, since it uses as much as digits as its factorization.

28300071857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 28300071857 in words is "twenty-eight billion, three hundred million, seventy-one thousand, eight hundred fifty-seven".