20880271 has 2 divisors, whose sum is σ = 20880272. Its totient is φ = 20880270.

The previous prime is 20880269. The next prime is 20880281. The reversal of 20880271 is 17208802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20880271 - 2¹ = 20880269 is a prime.

Together with 20880269, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20880281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10440135 + 10440136.

It is an arithmetic number, because the mean of its divisors is an integer number (10440136).

Almost surely, 2^20880271 is an apocalyptic number.

20880271 is a deficient number, since it is larger than the sum of its proper divisors (1).

20880271 is an equidigital number, since it uses as much as digits as its factorization.

20880271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 20880271 is about 4569.4935167915. The cubic root of 20880271 is about 275.3670954240.

The spelling of 20880271 in words is "twenty million, eight hundred eighty thousand, two hundred seventy-one".