28175343073 has 4 divisors (see below), whose sum is σ = 28176438420. Its totient is φ = 28174247728.

The previous prime is 28175343061. The next prime is 28175343089. The reversal of 28175343073 is 37034357182.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37034357182 = 2 ⋅18517178591.

It can be written as a sum of positive squares in 2 ways, for example, as 4621688289 + 23553654784 = 67983^2 + 153472^2 .

It is a cyclic number.

It is not a de Polignac number, because 28175343073 - 2¹³ = 28175334881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28175343173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508138 + ... + 560851.

It is an arithmetic number, because the mean of its divisors is an integer number (7044109605).

Almost surely, 2^28175343073 is an apocalyptic number.

It is an amenable number.

28175343073 is a deficient number, since it is larger than the sum of its proper divisors (1095347).

28175343073 is a wasteful number, since it uses less digits than its factorization.

28175343073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095346.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 28175343073 in words is "twenty-eight billion, one hundred seventy-five million, three hundred forty-three thousand, seventy-three".