19520424 has 144 divisors (see below), whose sum is σ = 67223520. Its totient is φ = 5060160.

The previous prime is 19520407. The next prime is 19520447. The reversal of 19520424 is 42402591.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 38557 + ... + 39059.

It is an arithmetic number, because the mean of its divisors is an integer number (466830).

Almost surely, 2^19520424 is an apocalyptic number.

19520424 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 19520424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33611760).

19520424 is an abundant number, since it is smaller than the sum of its proper divisors (47703096).

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

19520424 is a wasteful number, since it uses less digits than its factorization.

19520424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 19520424 is about 4418.1923905597. The cubic root of 19520424 is about 269.2545693832.

The spelling of 19520424 in words is "nineteen million, five hundred twenty thousand, four hundred twenty-four".