20967933 has 40 divisors (see below), whose sum is σ = 33880896. Its totient is φ = 11524800.

The previous prime is 20967923. The next prime is 20967949. The reversal of 20967933 is 33976902.

It is not a de Polignac number, because 20967933 - 2⁴ = 20967917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20967891 and 20967900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20967923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 295288 + ... + 295358.

Almost surely, 2^20967933 is an apocalyptic number.

It is an amenable number.

20967933 is a deficient number, since it is larger than the sum of its proper divisors (12912963).

20967933 is an frugal number, since it uses more digits than its factorization.

20967933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 20967933 is about 4579.0755617264. The cubic root of 20967933 is about 275.7519168584.

The spelling of 20967933 in words is "twenty million, nine hundred sixty-seven thousand, nine hundred thirty-three".