20853727 has 4 divisors (see below), whose sum is σ = 21207240. Its totient is φ = 20500216.

The previous prime is 20853719. The next prime is 20853757. The reversal of 20853727 is 72735802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72735802 = 2 ⋅36367901.

It is a cyclic number.

It is not a de Polignac number, because 20853727 - 2³ = 20853719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20853692 and 20853701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20853757) 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 3 ways as a sum of consecutive naturals, for example, 176668 + ... + 176785.

It is an arithmetic number, because the mean of its divisors is an integer number (5301810).

Almost surely, 2^20853727 is an apocalyptic number.

20853727 is a deficient number, since it is larger than the sum of its proper divisors (353513).

20853727 is an equidigital number, since it uses as much as digits as its factorization.

20853727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353512.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 20853727 is about 4566.5881136796. The cubic root of 20853727 is about 275.2503593321.

It can be divided in two parts, 208 and 53727, that added together give a palindrome (53935).

The spelling of 20853727 in words is "twenty million, eight hundred fifty-three thousand, seven hundred twenty-seven".