20791327 has 4 divisors (see below), whose sum is σ = 20878560. Its totient is φ = 20704096.

The previous prime is 20791291. The next prime is 20791363. The reversal of 20791327 is 72319702.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20791291) and next prime (20791363).

It is a cyclic number.

It is not a de Polignac number, because 20791327 - 2¹⁵ = 20758559 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 (20791367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43258 + ... + 43735.

It is an arithmetic number, because the mean of its divisors is an integer number (5219640).

Almost surely, 2^20791327 is an apocalyptic number.

20791327 is a deficient number, since it is larger than the sum of its proper divisors (87233).

20791327 is an equidigital number, since it uses as much as digits as its factorization.

20791327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87232.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 20791327 is about 4559.7507607324. The cubic root of 20791327 is about 274.9755438306.

The spelling of 20791327 in words is "twenty million, seven hundred ninety-one thousand, three hundred twenty-seven".