28848627881 has 4 divisors (see below), whose sum is σ = 28852881492. Its totient is φ = 28844374272.

The previous prime is 28848627851. The next prime is 28848627883. The reversal of 28848627881 is 18872684882.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3759651856 + 25088976025 = 61316^2 + 158395^2 .

It is a cyclic number.

It is not a de Polignac number, because 28848627881 - 2³⁴ = 11668758697 is a prime.

It is a super-2 number, since 2×28848627881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28848627883) 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, 2116616 + ... + 2130201.

It is an arithmetic number, because the mean of its divisors is an integer number (7213220373).

Almost surely, 2^28848627881 is an apocalyptic number.

It is an amenable number.

28848627881 is a deficient number, since it is larger than the sum of its proper divisors (4253611).

28848627881 is an equidigital number, since it uses as much as digits as its factorization.

28848627881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253610.

The product of its digits is 22020096, while the sum is 62.

The spelling of 28848627881 in words is "twenty-eight billion, eight hundred forty-eight million, six hundred twenty-seven thousand, eight hundred eighty-one".