20527873 has 4 divisors (see below), whose sum is σ = 20598228. Its totient is φ = 20457520.

The previous prime is 20527867. The next prime is 20527877. The reversal of 20527873 is 37872502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13307904 + 7219969 = 3648^2 + 2687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20527873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20527877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34738 + ... + 35323.

It is an arithmetic number, because the mean of its divisors is an integer number (5149557).

Almost surely, 2^20527873 is an apocalyptic number.

It is an amenable number.

20527873 is a deficient number, since it is larger than the sum of its proper divisors (70355).

20527873 is an equidigital number, since it uses as much as digits as its factorization.

20527873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70354.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 20527873 is about 4530.7695814287. The cubic root of 20527873 is about 273.8091670307.

The spelling of 20527873 in words is "twenty million, five hundred twenty-seven thousand, eight hundred seventy-three".