20268085 has 8 divisors (see below), whose sum is σ = 24655320. Its totient is φ = 15992064.

The previous prime is 20268077. The next prime is 20268089. The reversal of 20268085 is 58086202.

It can be written as a sum of positive squares in 4 ways, for example, as 81 + 20268004 = 9^2 + 4502^2 .

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 20268085 - 2³ = 20268077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20268089) 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 7 ways as a sum of consecutive naturals, for example, 27400 + ... + 28129.

It is an arithmetic number, because the mean of its divisors is an integer number (3081915).

Almost surely, 2^20268085 is an apocalyptic number.

It is an amenable number.

20268085 is a deficient number, since it is larger than the sum of its proper divisors (4387235).

20268085 is an equidigital number, since it uses as much as digits as its factorization.

20268085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55607.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 20268085 is about 4502.0089959928. The cubic root of 20268085 is about 272.6492070673.

The spelling of 20268085 in words is "twenty million, two hundred sixty-eight thousand, eighty-five".