28806848547 has 4 divisors (see below), whose sum is σ = 38409131400. Its totient is φ = 19204565696.

The previous prime is 28806848491. The next prime is 28806848579. The reversal of 28806848547 is 74584860882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28806848547 - 2¹⁰ = 28806847523 is a prime.

It is a super-2 number, since 2×28806848547² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28806848597) 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, 4801141422 + ... + 4801141427.

It is an arithmetic number, because the mean of its divisors is an integer number (9602282850).

Almost surely, 2^28806848547 is an apocalyptic number.

28806848547 is a deficient number, since it is larger than the sum of its proper divisors (9602282853).

28806848547 is an equidigital number, since it uses as much as digits as its factorization.

28806848547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9602282852.

The product of its (nonzero) digits is 27525120, while the sum is 60.

The spelling of 28806848547 in words is "twenty-eight billion, eight hundred six million, eight hundred forty-eight thousand, five hundred forty-seven".