19938272 has 12 divisors (see below), whose sum is σ = 39253536. Its totient is φ = 9969120.

The previous prime is 19938241. The next prime is 19938287. The reversal of 19938272 is 27283991.

It is a happy number.

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 as a sum of consecutive naturals, namely, 311504 + ... + 311567.

It is an arithmetic number, because the mean of its divisors is an integer number (3271128).

Almost surely, 2^19938272 is an apocalyptic number.

It is an amenable number.

19938272 is a deficient number, since it is larger than the sum of its proper divisors (19315264).

19938272 is an equidigital number, since it uses as much as digits as its factorization.

19938272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623081 (or 623073 counting only the distinct ones).

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

The square root of 19938272 is about 4465.2292214398. The cubic root of 19938272 is about 271.1622145795.

The spelling of 19938272 in words is "nineteen million, nine hundred thirty-eight thousand, two hundred seventy-two".