28530854147 has 4 divisors (see below), whose sum is σ = 28538629776. Its totient is φ = 28523078520.

The previous prime is 28530854117. The next prime is 28530854161. The reversal of 28530854147 is 74145803582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74145803582 = 2 ⋅37072901791.

It is a cyclic number.

It is not a de Polignac number, because 28530854147 - 2⁶ = 28530854083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28530854117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3882308 + ... + 3889649.

It is an arithmetic number, because the mean of its divisors is an integer number (7134657444).

Almost surely, 2^28530854147 is an apocalyptic number.

28530854147 is a deficient number, since it is larger than the sum of its proper divisors (7775629).

28530854147 is an equidigital number, since it uses as much as digits as its factorization.

28530854147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775628.

The product of its (nonzero) digits is 1075200, while the sum is 47.

The spelling of 28530854147 in words is "twenty-eight billion, five hundred thirty million, eight hundred fifty-four thousand, one hundred forty-seven".