19743696 has 80 divisors (see below), whose sum is σ = 64777600. Its totient is φ = 5640192.

The previous prime is 19743677. The next prime is 19743767. The reversal of 19743696 is 69634791.

It is a nude number because it is divisible by every one of its digits.

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 in 15 ways as a sum of consecutive naturals, for example, 241 + ... + 6288.

It is an arithmetic number, because the mean of its divisors is an integer number (809720).

Almost surely, 2^19743696 is an apocalyptic number.

19743696 is a gapful number since it is divisible by the number (16) 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 19743696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32388800).

19743696 is an abundant number, since it is smaller than the sum of its proper divisors (45033904).

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

19743696 is a wasteful number, since it uses less digits than its factorization.

19743696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6553 (or 6541 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 19743696 is about 4443.3878966392. The cubic root of 19743696 is about 270.2772460801.

The spelling of 19743696 in words is "nineteen million, seven hundred forty-three thousand, six hundred ninety-six".