20396271 has 8 divisors (see below), whose sum is σ = 31080064. Its totient is φ = 11655000.

The previous prime is 20396269. The next prime is 20396279. The reversal of 20396271 is 17269302.

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

It is not a de Polignac number, because 20396271 - 2¹ = 20396269 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 (20396279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485605 + ... + 485646.

It is an arithmetic number, because the mean of its divisors is an integer number (3885008).

Almost surely, 2^20396271 is an apocalyptic number.

20396271 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20396271 is a deficient number, since it is larger than the sum of its proper divisors (10683793).

20396271 is an equidigital number, since it uses as much as digits as its factorization.

20396271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971261.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20396271 is about 4516.2230901496. The cubic root of 20396271 is about 273.2227917407. Note that the first 3 decimals are identical.

The spelling of 20396271 in words is "twenty million, three hundred ninety-six thousand, two hundred seventy-one".