28438608271 has 2 divisors, whose sum is σ = 28438608272. Its totient is φ = 28438608270.

The previous prime is 28438608241. The next prime is 28438608281. The reversal of 28438608271 is 17280683482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28438608271 - 2⁵ = 28438608239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28438608241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14219304135 + 14219304136.

It is an arithmetic number, because the mean of its divisors is an integer number (14219304136).

Almost surely, 2^28438608271 is an apocalyptic number.

28438608271 is a deficient number, since it is larger than the sum of its proper divisors (1).

28438608271 is an equidigital number, since it uses as much as digits as its factorization.

28438608271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 28438608271 in words is "twenty-eight billion, four hundred thirty-eight million, six hundred eight thousand, two hundred seventy-one".