20544484 has 6 divisors (see below), whose sum is σ = 35952854. Its totient is φ = 10272240.

The previous prime is 20544481. The next prime is 20544487. The reversal of 20544484 is 48444502.

It is an interprime number because it is at equal distance from previous prime (20544481) and next prime (20544487).

It can be written as a sum of positive squares in only one way, i.e., 19272100 + 1272384 = 4390^2 + 1128^2 .

It is not an unprimeable number, because it can be changed into a prime (20544481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2568057 + ... + 2568064.

Almost surely, 2^20544484 is an apocalyptic number.

It is an amenable number.

20544484 is a deficient number, since it is larger than the sum of its proper divisors (15408370).

20544484 is a wasteful number, since it uses less digits than its factorization.

20544484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5136125 (or 5136123 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 20544484 is about 4532.6023430255. The cubic root of 20544484 is about 273.8830018897.

Adding to 20544484 its reverse (48444502), we get a palindrome (68988986).

The spelling of 20544484 in words is "twenty million, five hundred forty-four thousand, four hundred eighty-four".