20727323 has 2 divisors, whose sum is σ = 20727324. Its totient is φ = 20727322.

The previous prime is 20727283. The next prime is 20727353. The reversal of 20727323 is 32372702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20727323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20727292 and 20727301.

It is not a weakly prime, because it can be changed into another prime (20727353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363661 + 10363662.

It is an arithmetic number, because the mean of its divisors is an integer number (10363662).

Almost surely, 2^20727323 is an apocalyptic number.

20727323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20727323 is an equidigital number, since it uses as much as digits as its factorization.

20727323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 20727323 is about 4552.7269850058. The cubic root of 20727323 is about 274.6930923206.

The spelling of 20727323 in words is "twenty million, seven hundred twenty-seven thousand, three hundred twenty-three".