20727163 has 8 divisors (see below), whose sum is σ = 21735936. Its totient is φ = 19727400.

The previous prime is 20727137. The next prime is 20727167. The reversal of 20727163 is 36172702.

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 20727163 - 2¹⁷ = 20596091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20727167) 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, 2718 + ... + 6988.

It is an arithmetic number, because the mean of its divisors is an integer number (2716992).

Almost surely, 2^20727163 is an apocalyptic number.

20727163 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20727163 is a deficient number, since it is larger than the sum of its proper divisors (1008773).

20727163 is a wasteful number, since it uses less digits than its factorization.

20727163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 20727163 is about 4552.7094130858. The cubic root of 20727163 is about 274.6923855079.

Adding to 20727163 its reverse (36172702), we get a palindrome (56899865).

The spelling of 20727163 in words is "twenty million, seven hundred twenty-seven thousand, one hundred sixty-three".