20814484 has 12 divisors (see below), whose sum is σ = 36786708. Its totient is φ = 10304000.

The previous prime is 20814463. The next prime is 20814503. The reversal of 20814484 is 48441802.

It can be written as a sum of positive squares in 2 ways, for example, as 8410000 + 12404484 = 2900^2 + 3522^2 .

It is a zygodrome in base 3.

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 3 ways as a sum of consecutive naturals, for example, 25357 + ... + 26164.

It is an arithmetic number, because the mean of its divisors is an integer number (3065559).

Almost surely, 2^20814484 is an apocalyptic number.

It is an amenable number.

20814484 is a deficient number, since it is larger than the sum of its proper divisors (15972224).

20814484 is a wasteful number, since it uses less digits than its factorization.

20814484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51626 (or 51624 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 20814484 is about 4562.2893376023. The cubic root of 20814484 is about 275.0775935313.

The spelling of 20814484 in words is "twenty million, eight hundred fourteen thousand, four hundred eighty-four".