20720327 has 2 divisors, whose sum is σ = 20720328. Its totient is φ = 20720326.

The previous prime is 20720321. The next prime is 20720341. The reversal of 20720327 is 72302702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20720327 - 2⁴ = 20720311 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 (20720321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10360163 + 10360164.

It is an arithmetic number, because the mean of its divisors is an integer number (10360164).

Almost surely, 2^20720327 is an apocalyptic number.

20720327 is a deficient number, since it is larger than the sum of its proper divisors (1).

20720327 is an equidigital number, since it uses as much as digits as its factorization.

20720327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 20720327 is about 4551.9585894426. The cubic root of 20720327 is about 274.6621835353.

The spelling of 20720327 in words is "twenty million, seven hundred twenty thousand, three hundred twenty-seven".