28545447067 has 8 divisors (see below), whose sum is σ = 29255063040. Its totient is φ = 27844538280.

The previous prime is 28545447059. The next prime is 28545447137. The reversal of 28545447067 is 76074454582.

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 28545447067 - 2³ = 28545447059 is a prime.

It is a super-3 number, since 3×28545447067³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28545447037) 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, 2170159 + ... + 2183272.

It is an arithmetic number, because the mean of its divisors is an integer number (3656882880).

Almost surely, 2^28545447067 is an apocalyptic number.

28545447067 is a deficient number, since it is larger than the sum of its proper divisors (709615973).

28545447067 is an equidigital number, since it uses as much as digits as its factorization.

28545447067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353593.

The product of its (nonzero) digits is 7526400, while the sum is 52.

The spelling of 28545447067 in words is "twenty-eight billion, five hundred forty-five million, four hundred forty-seven thousand, sixty-seven".