20144448 has 84 divisors (see below), whose sum is σ = 59218068. Its totient is φ = 6543360.

The previous prime is 20144437. The next prime is 20144461. The reversal of 20144448 is 84444102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1065024 + 19079424 = 1032^2 + 4368^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23190 + ... + 24042.

It is an arithmetic number, because the mean of its divisors is an integer number (704977).

Almost surely, 2^20144448 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 20144448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29609034).

20144448 is an abundant number, since it is smaller than the sum of its proper divisors (39073620).

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

20144448 is a wasteful number, since it uses less digits than its factorization.

20144448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

The square root of 20144448 is about 4488.2566771521. The cubic root of 20144448 is about 272.0936816868.

The spelling of 20144448 in words is "twenty million, one hundred forty-four thousand, four hundred forty-eight".