28148112947 has 2 divisors, whose sum is σ = 28148112948. Its totient is φ = 28148112946.

The previous prime is 28148112827. The next prime is 28148112973. The reversal of 28148112947 is 74921184182.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28148112947 - 2¹⁴ = 28148096563 is a prime.

It is not a weakly prime, because it can be changed into another prime (28148117947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14074056473 + 14074056474.

It is an arithmetic number, because the mean of its divisors is an integer number (14074056474).

Almost surely, 2^28148112947 is an apocalyptic number.

28148112947 is a deficient number, since it is larger than the sum of its proper divisors (1).

28148112947 is an equidigital number, since it uses as much as digits as its factorization.

28148112947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 47.

The spelling of 28148112947 in words is "twenty-eight billion, one hundred forty-eight million, one hundred twelve thousand, nine hundred forty-seven".