28283417945 has 8 divisors (see below), whose sum is σ = 34136288136. Its totient is φ = 22495943296.

The previous prime is 28283417933. The next prime is 28283417959. The reversal of 28283417945 is 54971438282.

It can be written as a sum of positive squares in 4 ways, for example, as 7148364304 + 21135053641 = 84548^2 + 145379^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28283417945 - 2⁶ = 28283417881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16347932 + ... + 16349661.

It is an arithmetic number, because the mean of its divisors is an integer number (4267036017).

Almost surely, 2^28283417945 is an apocalyptic number.

It is an amenable number.

28283417945 is a deficient number, since it is larger than the sum of its proper divisors (5852870191).

28283417945 is a wasteful number, since it uses less digits than its factorization.

28283417945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32697771.

The product of its digits is 3870720, while the sum is 53.

The spelling of 28283417945 in words is "twenty-eight billion, two hundred eighty-three million, four hundred seventeen thousand, nine hundred forty-five".