19944272 has 10 divisors (see below), whose sum is σ = 38642058. Its totient is φ = 9972128.

The previous prime is 19944269. The next prime is 19944293. The reversal of 19944272 is 27244991.

It can be written as a sum of positive squares in only one way, i.e., 13512976 + 6431296 = 3676^2 + 2536^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623243 + ... + 623274.

Almost surely, 2^19944272 is an apocalyptic number.

It is an amenable number.

19944272 is a deficient number, since it is larger than the sum of its proper divisors (18697786).

19944272 is a wasteful number, since it uses less digits than its factorization.

19944272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246525 (or 1246519 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 19944272 is about 4465.9010289078. The cubic root of 19944272 is about 271.1894120236.

The spelling of 19944272 in words is "nineteen million, nine hundred forty-four thousand, two hundred seventy-two".