20443248 has 120 divisors (see below), whose sum is σ = 69290208. Its totient is φ = 5492736.

The previous prime is 20443201. The next prime is 20443249. The reversal of 20443248 is 84234402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20443249) 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 23 ways as a sum of consecutive naturals, for example, 16540 + ... + 17732.

Almost surely, 2^20443248 is an apocalyptic number.

20443248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20443248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34645104).

20443248 is an abundant number, since it is smaller than the sum of its proper divisors (48846960).

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

20443248 is a wasteful number, since it uses less digits than its factorization.

20443248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1222 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 20443248 is about 4521.4210155658. The cubic root of 20443248 is about 273.4323945256.

It can be divided in two parts, 204432 and 48, that added together give a triangular number (204480 = T₆₃₉).

The spelling of 20443248 in words is "twenty million, four hundred forty-three thousand, two hundred forty-eight".