19803448 has 40 divisors (see below), whose sum is σ = 43359480. Its totient is φ = 8478960.

The previous prime is 19803439. The next prime is 19803449. The reversal of 19803448 is 84430891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19803449) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18693 + ... + 19723.

It is an arithmetic number, because the mean of its divisors is an integer number (1083987).

Almost surely, 2^19803448 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 19803448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21679740).

19803448 is an abundant number, since it is smaller than the sum of its proper divisors (23556032).

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

19803448 is an equidigital number, since it uses as much as digits as its factorization.

19803448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 19803448 is about 4450.1065155791. The cubic root of 19803448 is about 270.5496257080.

The spelling of 19803448 in words is "nineteen million, eight hundred three thousand, four hundred forty-eight".