28340045385 has 16 divisors (see below), whose sum is σ = 45426981696. Its totient is φ = 15087054528.

The previous prime is 28340045353. The next prime is 28340045407. The reversal of 28340045385 is 58354004382.

It is not a de Polignac number, because 28340045385 - 2⁵ = 28340045353 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1718794 + ... + 1735203.

It is an arithmetic number, because the mean of its divisors is an integer number (2839186356).

Almost surely, 2^28340045385 is an apocalyptic number.

It is an amenable number.

28340045385 is a deficient number, since it is larger than the sum of its proper divisors (17086936311).

28340045385 is a wasteful number, since it uses less digits than its factorization.

28340045385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454552.

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 28340045385 in words is "twenty-eight billion, three hundred forty million, forty-five thousand, three hundred eighty-five".