19716448 has 12 divisors (see below), whose sum is σ = 38816820. Its totient is φ = 9858208.

The previous prime is 19716439. The next prime is 19716479. The reversal of 19716448 is 84461791.

It is a self number, because there is not a number n which added to its sum of digits gives 19716448.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 308038 + ... + 308101.

It is an arithmetic number, because the mean of its divisors is an integer number (3234735).

Almost surely, 2^19716448 is an apocalyptic number.

It is an amenable number.

19716448 is a deficient number, since it is larger than the sum of its proper divisors (19100372).

19716448 is an equidigital number, since it uses as much as digits as its factorization.

19716448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616149 (or 616141 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 19716448 is about 4440.3207091380. The cubic root of 19716448 is about 270.1528535502.

It can be divided in two parts, 19716 and 448, that added together give a square (20164 = 142²).

The spelling of 19716448 in words is "nineteen million, seven hundred sixteen thousand, four hundred forty-eight".