20441493 has 24 divisors (see below), whose sum is σ = 31239936. Its totient is φ = 12859200.

The previous prime is 20441471. The next prime is 20441563. The reversal of 20441493 is 39414402.

It is not a de Polignac number, because 20441493 - 2⁵ = 20441461 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10546 + ... + 12332.

It is an arithmetic number, because the mean of its divisors is an integer number (1301664).

Almost surely, 2^20441493 is an apocalyptic number.

It is an amenable number.

20441493 is a deficient number, since it is larger than the sum of its proper divisors (10798443).

20441493 is a wasteful number, since it uses less digits than its factorization.

20441493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865 (or 1862 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20441493 is about 4521.2269352467. The cubic root of 20441493 is about 273.4245698136.

Adding to 20441493 its reverse (39414402), we get a palindrome (59855895).

The spelling of 20441493 in words is "twenty million, four hundred forty-one thousand, four hundred ninety-three".