20992303 has 2 divisors, whose sum is σ = 20992304. Its totient is φ = 20992302.

The previous prime is 20992291. The next prime is 20992333. The reversal of 20992303 is 30329902.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20992303 - 2⁵ = 20992271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20992333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10496151 + 10496152.

It is an arithmetic number, because the mean of its divisors is an integer number (10496152).

Almost surely, 2^20992303 is an apocalyptic number.

20992303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20992303 is an equidigital number, since it uses as much as digits as its factorization.

20992303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 20992303 is about 4581.7358064384. The cubic root of 20992303 is about 275.8587064725.

The spelling of 20992303 in words is "twenty million, nine hundred ninety-two thousand, three hundred three".