28320773426 has 16 divisors (see below), whose sum is σ = 47941122240. Its totient is φ = 12429179280.

The previous prime is 28320773423. The next prime is 28320773449. The reversal of 28320773426 is 62437702382.

It is not an unprimeable number, because it can be changed into a prime (28320773423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22194326 + ... + 22195601.

It is an arithmetic number, because the mean of its divisors is an integer number (2996320140).

Almost surely, 2^28320773426 is an apocalyptic number.

28320773426 is a deficient number, since it is larger than the sum of its proper divisors (19620348814).

28320773426 is a wasteful number, since it uses less digits than its factorization.

28320773426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44389969.

The product of its (nonzero) digits is 677376, while the sum is 44.

The spelling of 28320773426 in words is "twenty-eight billion, three hundred twenty million, seven hundred seventy-three thousand, four hundred twenty-six".