19716944 has 20 divisors (see below), whose sum is σ = 41140596. Its totient is φ = 9100032.

The previous prime is 19716943. The next prime is 19716947. The reversal of 19716944 is 44961791.

It can be written as a sum of positive squares in 2 ways, for example, as 1123600 + 18593344 = 1060^2 + 4312^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19716943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47189 + ... + 47604.

Almost surely, 2^19716944 is an apocalyptic number.

It is an amenable number.

19716944 is an abundant number, since it is smaller than the sum of its proper divisors (21423652).

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

19716944 is a wasteful number, since it uses less digits than its factorization.

19716944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94814 (or 94808 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 19716944 is about 4440.3765606083. The cubic root of 19716944 is about 270.1551189124.

The spelling of 19716944 in words is "nineteen million, seven hundred sixteen thousand, nine hundred forty-four".