28175887147 has 2 divisors, whose sum is σ = 28175887148. Its totient is φ = 28175887146.

The previous prime is 28175887139. The next prime is 28175887163. The reversal of 28175887147 is 74178857182.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28175887147 - 2³ = 28175887139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28175887091 and 28175887100.

It is not a weakly prime, because it can be changed into another prime (28175885147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14087943573 + 14087943574.

It is an arithmetic number, because the mean of its divisors is an integer number (14087943574).

Almost surely, 2^28175887147 is an apocalyptic number.

28175887147 is a deficient number, since it is larger than the sum of its proper divisors (1).

28175887147 is an equidigital number, since it uses as much as digits as its factorization.

28175887147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7024640, while the sum is 58.

The spelling of 28175887147 in words is "twenty-eight billion, one hundred seventy-five million, eight hundred eighty-seven thousand, one hundred forty-seven".