20967329 has 8 divisors (see below), whose sum is σ = 21928320. Its totient is φ = 20010496.

The previous prime is 20967313. The next prime is 20967337. The reversal of 20967329 is 92376902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20967329 - 2⁴ = 20967313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20967292 and 20967301.

It is not an unprimeable number, because it can be changed into a prime (20967379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14177 + ... + 15585.

It is an arithmetic number, because the mean of its divisors is an integer number (2741040).

Almost surely, 2^20967329 is an apocalyptic number.

It is an amenable number.

20967329 is a deficient number, since it is larger than the sum of its proper divisors (960991).

20967329 is a wasteful number, since it uses less digits than its factorization.

20967329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 20967329 is about 4579.0096090749. The cubic root of 20967329 is about 275.7492690730.

The spelling of 20967329 in words is "twenty million, nine hundred sixty-seven thousand, three hundred twenty-nine".