20814271 has 8 divisors (see below), whose sum is σ = 21205440. Its totient is φ = 20426112.

The previous prime is 20814263. The next prime is 20814281. The reversal of 20814271 is 17241802.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20814271 - 2³ = 20814263 is a prime.

It is a super-2 number, since 2×20814271² = 866467754522882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20814251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16851 + ... + 18043.

It is an arithmetic number, because the mean of its divisors is an integer number (2650680).

Almost surely, 2^20814271 is an apocalyptic number.

20814271 is a deficient number, since it is larger than the sum of its proper divisors (391169).

20814271 is a wasteful number, since it uses less digits than its factorization.

20814271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 20814271 is about 4562.2659939990. The cubic root of 20814271 is about 275.0766552147.

The spelling of 20814271 in words is "twenty million, eight hundred fourteen thousand, two hundred seventy-one".