28616048887 has 4 divisors (see below), whose sum is σ = 29281538440. Its totient is φ = 27950559336.

The previous prime is 28616048849. The next prime is 28616048891. The reversal of 28616048887 is 78884061682.

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 28616048887 - 2¹⁹ = 28615524599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28616048387) 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, 332744712 + ... + 332744797.

It is an arithmetic number, because the mean of its divisors is an integer number (7320384610).

Almost surely, 2^28616048887 is an apocalyptic number.

28616048887 is a deficient number, since it is larger than the sum of its proper divisors (665489553).

28616048887 is an equidigital number, since it uses as much as digits as its factorization.

28616048887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665489552.

The product of its (nonzero) digits is 8257536, while the sum is 58.

The spelling of 28616048887 in words is "twenty-eight billion, six hundred sixteen million, forty-eight thousand, eight hundred eighty-seven".