20107743 has 8 divisors (see below), whose sum is σ = 26867328. Its totient is φ = 13376664.

The previous prime is 20107741. The next prime is 20107751. The reversal of 20107743 is 34770102.

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

It is not a de Polignac number, because 20107743 - 2¹ = 20107741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20107741) 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, 5421 + ... + 8342.

It is an arithmetic number, because the mean of its divisors is an integer number (3358416).

Almost surely, 2^20107743 is an apocalyptic number.

20107743 is a deficient number, since it is larger than the sum of its proper divisors (6759585).

20107743 is a wasteful number, since it uses less digits than its factorization.

20107743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14253.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 20107743 is about 4484.1658087096. The cubic root of 20107743 is about 271.9283214745.

Adding to 20107743 its reverse (34770102), we get a palindrome (54877845).

The spelling of 20107743 in words is "twenty million, one hundred seven thousand, seven hundred forty-three".