28840474771 has 2 divisors, whose sum is σ = 28840474772. Its totient is φ = 28840474770.

The previous prime is 28840474759. The next prime is 28840474777. The reversal of 28840474771 is 17747404882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28840474771 - 2⁹ = 28840474259 is a prime.

It is not a weakly prime, because it can be changed into another prime (28840474777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14420237385 + 14420237386.

It is an arithmetic number, because the mean of its divisors is an integer number (14420237386).

Almost surely, 2^28840474771 is an apocalyptic number.

28840474771 is a deficient number, since it is larger than the sum of its proper divisors (1).

28840474771 is an equidigital number, since it uses as much as digits as its factorization.

28840474771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2809856, while the sum is 52.

The spelling of 28840474771 in words is "twenty-eight billion, eight hundred forty million, four hundred seventy-four thousand, seven hundred seventy-one".