20748727 has 2 divisors, whose sum is σ = 20748728. Its totient is φ = 20748726.

The previous prime is 20748719. The next prime is 20748751. The reversal of 20748727 is 72784702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20748727 - 2³ = 20748719 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20748757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10374363 + 10374364.

It is an arithmetic number, because the mean of its divisors is an integer number (10374364).

Almost surely, 2^20748727 is an apocalyptic number.

20748727 is a deficient number, since it is larger than the sum of its proper divisors (1).

20748727 is an equidigital number, since it uses as much as digits as its factorization.

20748727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 20748727 is about 4555.0770575260. The cubic root of 20748727 is about 274.7876134234.

It can be divided in two parts, 2074 and 8727, that added together give a palindrome (10801).

The spelling of 20748727 in words is "twenty million, seven hundred forty-eight thousand, seven hundred twenty-seven".