20585244 has 48 divisors (see below), whose sum is σ = 50148000. Its totient is φ = 6564096.

The previous prime is 20585237. The next prime is 20585291. The reversal of 20585244 is 44258502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51654 + ... + 52050.

It is an arithmetic number, because the mean of its divisors is an integer number (1044750).

Almost surely, 2^20585244 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 20585244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25074000).

20585244 is an abundant number, since it is smaller than the sum of its proper divisors (29562756).

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

20585244 is a wasteful number, since it uses less digits than its factorization.

20585244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 20585244 is about 4537.0964283339. The cubic root of 20585244 is about 274.0640090569.

The spelling of 20585244 in words is "twenty million, five hundred eighty-five thousand, two hundred forty-four".