19944968 has 8 divisors (see below), whose sum is σ = 37396830. Its totient is φ = 9972480.

The previous prime is 19944943. The next prime is 19944973. The reversal of 19944968 is 86944991.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19201924 + 743044 = 4382^2 + 862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246553 + ... + 1246568.

Almost surely, 2^19944968 is an apocalyptic number.

It is an amenable number.

19944968 is a deficient number, since it is larger than the sum of its proper divisors (17451862).

19944968 is a wasteful number, since it uses less digits than its factorization.

19944968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493127 (or 2493123 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 19944968 is about 4465.9789520328. The cubic root of 19944968 is about 271.1925665740.

The spelling of 19944968 in words is "nineteen million, nine hundred forty-four thousand, nine hundred sixty-eight".