20338448 has 40 divisors (see below), whose sum is σ = 42710808. Its totient is φ = 9326592.

The previous prime is 20338433. The next prime is 20338469. The reversal of 20338448 is 84483302.

It can be written as a sum of positive squares in 4 ways, for example, as 16384 + 20322064 = 128^2 + 4508^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57440 + ... + 57792.

Almost surely, 2^20338448 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 20338448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21355404).

20338448 is an abundant number, since it is smaller than the sum of its proper divisors (22372360).

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

20338448 is a wasteful number, since it uses less digits than its factorization.

20338448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 20338448 is about 4509.8168477223. The cubic root of 20338448 is about 272.9643537387.

The spelling of 20338448 in words is "twenty million, three hundred thirty-eight thousand, four hundred forty-eight".