20302485 has 16 divisors (see below), whose sum is σ = 37124736. Its totient is φ = 9281088.

The previous prime is 20302481. The next prime is 20302517. The reversal of 20302485 is 58420302.

It is not a de Polignac number, because 20302485 - 2² = 20302481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302481) 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 15 ways as a sum of consecutive naturals, for example, 96574 + ... + 96783.

It is an arithmetic number, because the mean of its divisors is an integer number (2320296).

Almost surely, 2^20302485 is an apocalyptic number.

It is an amenable number.

20302485 is a deficient number, since it is larger than the sum of its proper divisors (16822251).

20302485 is a wasteful number, since it uses less digits than its factorization.

20302485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193372.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20302485 is about 4505.8278928517. The cubic root of 20302485 is about 272.8033711382.

Adding to 20302485 its reverse (58420302), we get a palindrome (78722787).

The spelling of 20302485 in words is "twenty million, three hundred two thousand, four hundred eighty-five".