19880448 has 120 divisors (see below), whose sum is σ = 61969248. Its totient is φ = 5548032.

The previous prime is 19880437. The next prime is 19880461. The reversal of 19880448 is 84408891.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 462315 + ... + 462357.

Almost surely, 2^19880448 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 19880448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30984624).

19880448 is an abundant number, since it is smaller than the sum of its proper divisors (42088800).

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

19880448 is an frugal number, since it uses more digits than its factorization.

19880448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 19880448 is about 4458.7496005046. The cubic root of 19880448 is about 270.8998236330.

Multiplying 19880448 by its sum of digits (42), we get a square (834978816 = 28896²).

19880448 divided by its sum of digits (42) gives a square (473344 = 688²).

The spelling of 19880448 in words is "nineteen million, eight hundred eighty thousand, four hundred forty-eight".