20019485 has 12 divisors (see below), whose sum is σ = 24317748. Its totient is φ = 15821568.

The previous prime is 20019463. The next prime is 20019511. The reversal of 20019485 is 58491002.

It can be written as a sum of positive squares in 6 ways, for example, as 2809 + 20016676 = 53^2 + 4474^2 .

It is not a de Polignac number, because 20019485 - 2⁸ = 20019229 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 59237 + ... + 59573.

It is an arithmetic number, because the mean of its divisors is an integer number (2026479).

Almost surely, 2^20019485 is an apocalyptic number.

It is an amenable number.

20019485 is a deficient number, since it is larger than the sum of its proper divisors (4298263).

20019485 is an equidigital number, since it uses as much as digits as its factorization.

20019485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 20019485 is about 4474.3139138867. The cubic root of 20019485 is about 271.5298837601.

The spelling of 20019485 in words is "twenty million, nineteen thousand, four hundred eighty-five".