20206485 has 36 divisors (see below), whose sum is σ = 37940292. Its totient is φ = 9944064.

The previous prime is 20206453. The next prime is 20206493. The reversal of 20206485 is 58460202.

It can be written as a sum of positive squares in 6 ways, for example, as 2842596 + 17363889 = 1686^2 + 4167^2 .

It is not a de Polignac number, because 20206485 - 2⁵ = 20206453 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6277 + ... + 8933.

It is an arithmetic number, because the mean of its divisors is an integer number (1053897).

Almost surely, 2^20206485 is an apocalyptic number.

It is an amenable number.

20206485 is a deficient number, since it is larger than the sum of its proper divisors (17733807).

20206485 is a wasteful number, since it uses less digits than its factorization.

20206485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694 (or 2678 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20206485 is about 4495.1623997360. The cubic root of 20206485 is about 272.3727093957.

Adding to 20206485 its reverse (58460202), we get a palindrome (78666687).

The spelling of 20206485 in words is "twenty million, two hundred six thousand, four hundred eighty-five".