20532763 has 4 divisors (see below), whose sum is σ = 20542720. Its totient is φ = 20522808.

The previous prime is 20532751. The next prime is 20532769. The reversal of 20532763 is 36723502.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20532763 - 2⁵ = 20532731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20532769) 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, 603 + ... + 6436.

It is an arithmetic number, because the mean of its divisors is an integer number (5135680).

Almost surely, 2^20532763 is an apocalyptic number.

20532763 is a deficient number, since it is larger than the sum of its proper divisors (9957).

20532763 is an equidigital number, since it uses as much as digits as its factorization.

20532763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9956.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 20532763 is about 4531.3091927168. The cubic root of 20532763 is about 273.8309069113.

The spelling of 20532763 in words is "twenty million, five hundred thirty-two thousand, seven hundred sixty-three".