20585448 has 64 divisors (see below), whose sum is σ = 61588800. Its totient is φ = 6333120.

The previous prime is 20585441. The next prime is 20585459. The reversal of 20585448 is 84458502.

20585448 is a `hidden beast` number, since 205 + 8 + 5 + 448 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20585441) 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, 858 + ... + 6473.

It is an arithmetic number, because the mean of its divisors is an integer number (962325).

Almost surely, 2^20585448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20585448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30794400).

20585448 is an abundant number, since it is smaller than the sum of its proper divisors (41003352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20585448 is a wasteful number, since it uses less digits than its factorization.

20585448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7359 (or 7349 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 20585448 is about 4537.1189096165. The cubic root of 20585448 is about 274.0649143797.

The spelling of 20585448 in words is "twenty million, five hundred eighty-five thousand, four hundred forty-eight".