20113763 has 4 divisors (see below), whose sum is σ = 20389368. Its totient is φ = 19838160.

The previous prime is 20113747. The next prime is 20113783. The reversal of 20113763 is 36731102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20113763 - 2⁴ = 20113747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137693 + ... + 137838.

It is an arithmetic number, because the mean of its divisors is an integer number (5097342).

Almost surely, 2^20113763 is an apocalyptic number.

20113763 is a deficient number, since it is larger than the sum of its proper divisors (275605).

20113763 is an equidigital number, since it uses as much as digits as its factorization.

20113763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275604.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20113763 is about 4484.8370093015. The cubic root of 20113763 is about 271.9554560491.

Adding to 20113763 its reverse (36731102), we get a palindrome (56844865).

The spelling of 20113763 in words is "twenty million, one hundred thirteen thousand, seven hundred sixty-three".