20992333 has 2 divisors, whose sum is σ = 20992334. Its totient is φ = 20992332.

The previous prime is 20992303. The next prime is 20992337. The reversal of 20992333 is 33329902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10771524 + 10220809 = 3282^2 + 3197^2 .

It is a cyclic number.

It is not a de Polignac number, because 20992333 - 2¹³ = 20984141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20992295 and 20992304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20992337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10496166 + 10496167.

It is an arithmetic number, because the mean of its divisors is an integer number (10496167).

Almost surely, 2^20992333 is an apocalyptic number.

It is an amenable number.

20992333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20992333 is an equidigital number, since it uses as much as digits as its factorization.

20992333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 20992333 is about 4581.7390803056. The cubic root of 20992333 is about 275.8588378819.

The spelling of 20992333 in words is "twenty million, nine hundred ninety-two thousand, three hundred thirty-three".