20020484 has 12 divisors (see below), whose sum is σ = 38221008. Its totient is φ = 9100200.

The previous prime is 20020463. The next prime is 20020487. The reversal of 20020484 is 48402002.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20020487) 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 3 ways as a sum of consecutive naturals, for example, 227462 + ... + 227549.

It is an arithmetic number, because the mean of its divisors is an integer number (3185084).

Almost surely, 2^20020484 is an apocalyptic number.

It is an amenable number.

20020484 is a deficient number, since it is larger than the sum of its proper divisors (18200524).

20020484 is a wasteful number, since it uses less digits than its factorization.

20020484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455026 (or 455024 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 20020484 is about 4474.4255497214. The cubic root of 20020484 is about 271.5344002573.

Adding to 20020484 its reverse (48402002), we get a palindrome (68422486).

The spelling of 20020484 in words is "twenty million, twenty thousand, four hundred eighty-four".