19744912 has 40 divisors (see below), whose sum is σ = 42720480. Its totient is φ = 8762880.

The previous prime is 19744909. The next prime is 19744927. The reversal of 19744912 is 21944791.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6264 + ... + 8872.

It is an arithmetic number, because the mean of its divisors is an integer number (1068012).

Almost surely, 2^19744912 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 19744912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21360240).

19744912 is an abundant number, since it is smaller than the sum of its proper divisors (22975568).

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

19744912 is a wasteful number, since it uses less digits than its factorization.

19744912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671 (or 2665 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 19744912 is about 4443.5247270607. The cubic root of 19744912 is about 270.2827946931.

It can be divided in two parts, 1974 and 4912, that added together give a palindrome (6886).

The spelling of 19744912 in words is "nineteen million, seven hundred forty-four thousand, nine hundred twelve".