28320805826 has 8 divisors (see below), whose sum is σ = 42494002704. Its totient is φ = 14156138260.

The previous prime is 28320805787. The next prime is 28320805829. The reversal of 28320805826 is 62850802382.

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

It is not an unprimeable number, because it can be changed into a prime (28320805829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124020 + ... + 2137311.

It is an arithmetic number, because the mean of its divisors is an integer number (5311750338).

Almost surely, 2^28320805826 is an apocalyptic number.

28320805826 is a deficient number, since it is larger than the sum of its proper divisors (14173196878).

28320805826 is a wasteful number, since it uses less digits than its factorization.

28320805826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4264656.

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 28320805826 in words is "twenty-eight billion, three hundred twenty million, eight hundred five thousand, eight hundred twenty-six".