20896873 has 2 divisors, whose sum is σ = 20896874. Its totient is φ = 20896872.

The previous prime is 20896867. The next prime is 20896901. The reversal of 20896873 is 37869802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14531344 + 6365529 = 3812^2 + 2523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20896873 is a prime.

It is not a weakly prime, because it can be changed into another prime (20896853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10448436 + 10448437.

It is an arithmetic number, because the mean of its divisors is an integer number (10448437).

Almost surely, 2^20896873 is an apocalyptic number.

It is an amenable number.

20896873 is a deficient number, since it is larger than the sum of its proper divisors (1).

20896873 is an equidigital number, since it uses as much as digits as its factorization.

20896873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 20896873 is about 4571.3097685456. The cubic root of 20896873 is about 275.4400579733.

The spelling of 20896873 in words is "twenty million, eight hundred ninety-six thousand, eight hundred seventy-three".