20004763 has 8 divisors (see below), whose sum is σ = 20337408. Its totient is φ = 19674984.

The previous prime is 20004749. The next prime is 20004773. The reversal of 20004763 is 36740002.

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 20004763 - 2⁵ = 20004731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004713) 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, 16620 + ... + 17782.

It is an arithmetic number, because the mean of its divisors is an integer number (2542176).

Almost surely, 2^20004763 is an apocalyptic number.

20004763 is a deficient number, since it is larger than the sum of its proper divisors (332645).

20004763 is a wasteful number, since it uses less digits than its factorization.

20004763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 20004763 is about 4472.6684428873. The cubic root of 20004763 is about 271.4633079010.

Adding to 20004763 its reverse (36740002), we get a palindrome (56744765).

The spelling of 20004763 in words is "twenty million, four thousand, seven hundred sixty-three".