20039448 has 64 divisors (see below), whose sum is σ = 58867200. Its totient is φ = 5604480.

The previous prime is 20039443. The next prime is 20039473. The reversal of 20039448 is 84493002.

It is a happy number.

It is a super-2 number, since 2×20039448² = 803158952289408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20039443) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 513 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (919800).

Almost surely, 2^20039448 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 20039448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29433600).

20039448 is an abundant number, since it is smaller than the sum of its proper divisors (38827752).

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

20039448 is a wasteful number, since it uses less digits than its factorization.

20039448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872 (or 5868 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20039448 is about 4476.5442028422. The cubic root of 20039448 is about 271.6201083641.

The spelling of 20039448 in words is "twenty million, thirty-nine thousand, four hundred forty-eight".