28320845547 has 8 divisors (see below), whose sum is σ = 39982370256. Its totient is φ = 17769942272.

The previous prime is 28320845537. The next prime is 28320845551. The reversal of 28320845547 is 74554802382.

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 28320845547 - 2¹⁹ = 28320321259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28320845496 and 28320845505.

It is not an unprimeable number, because it can be changed into a prime (28320845537) 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 7 ways as a sum of consecutive naturals, for example, 277655298 + ... + 277655399.

It is an arithmetic number, because the mean of its divisors is an integer number (4997796282).

Almost surely, 2^28320845547 is an apocalyptic number.

28320845547 is a deficient number, since it is larger than the sum of its proper divisors (11661524709).

28320845547 is a wasteful number, since it uses less digits than its factorization.

28320845547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555310717.

The product of its (nonzero) digits is 2150400, while the sum is 48.

The spelling of 28320845547 in words is "twenty-eight billion, three hundred twenty million, eight hundred forty-five thousand, five hundred forty-seven".