20854085 has 16 divisors (see below), whose sum is σ = 29030016. Its totient is φ = 14084928.

The previous prime is 20854079. The next prime is 20854091. The reversal of 20854085 is 58045802.

It is an interprime number because it is at equal distance from previous prime (20854079) and next prime (20854091).

It is a cyclic number.

It is not a de Polignac number, because 20854085 - 2¹⁰ = 20853061 is a prime.

It is a super-2 number, since 2×20854085² = 869785722374450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2102 + ... + 6791.

It is an arithmetic number, because the mean of its divisors is an integer number (1814376).

Almost surely, 2^20854085 is an apocalyptic number.

It is an amenable number.

20854085 is a deficient number, since it is larger than the sum of its proper divisors (8175931).

20854085 is an equidigital number, since it uses as much as digits as its factorization.

20854085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8972.

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 20854085 is about 4566.6273112659. The cubic root of 20854085 is about 275.2519344153.

Adding to 20854085 its reverse (58045802), we get a palindrome (78899887).

The spelling of 20854085 in words is "twenty million, eight hundred fifty-four thousand, eighty-five".