20683443 has 8 divisors (see below), whose sum is σ = 30085056. Its totient is φ = 12535400.

The previous prime is 20683423. The next prime is 20683447. The reversal of 20683443 is 34438602.

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 20683443 - 2⁶ = 20683379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20683443.

It is not an unprimeable number, because it can be changed into a prime (20683447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313353 + ... + 313418.

It is an arithmetic number, because the mean of its divisors is an integer number (3760632).

Almost surely, 2^20683443 is an apocalyptic number.

20683443 is a deficient number, since it is larger than the sum of its proper divisors (9401613).

20683443 is a wasteful number, since it uses less digits than its factorization.

20683443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626785.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 20683443 is about 4547.9053420229. The cubic root of 20683443 is about 274.4991124752.

The spelling of 20683443 in words is "twenty million, six hundred eighty-three thousand, four hundred forty-three".