19880224 has 48 divisors (see below), whose sum is σ = 48178368. Its totient is φ = 7863552.

The previous prime is 19880221. The next prime is 19880239. The reversal of 19880224 is 42208891.

It is a self number, because there is not a number n which added to its sum of digits gives 19880224.

It is not an unprimeable number, because it can be changed into a prime (19880221) 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 7 ways as a sum of consecutive naturals, for example, 502 + ... + 6325.

It is an arithmetic number, because the mean of its divisors is an integer number (1003716).

Almost surely, 2^19880224 is an apocalyptic number.

19880224 is a gapful number since it is divisible by the number (14) 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 19880224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24089184).

19880224 is an abundant number, since it is smaller than the sum of its proper divisors (28298144).

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

19880224 is a wasteful number, since it uses less digits than its factorization.

19880224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6857 (or 6849 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 19880224 is about 4458.7244812839. The cubic root of 19880224 is about 270.8988061880.

The spelling of 19880224 in words is "nineteen million, eight hundred eighty thousand, two hundred twenty-four".