19938672 has 60 divisors (see below), whose sum is σ = 60098584. Its totient is φ = 6134400.

The previous prime is 19938661. The next prime is 19938679. The reversal of 19938672 is 27683991.

It is a super-2 number, since 2×19938672² = 795101282247168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19938679) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 3454 + ... + 7197.

Almost surely, 2^19938672 is an apocalyptic number.

19938672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19938672 is an abundant number, since it is smaller than the sum of its proper divisors (40159912).

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

19938672 is a wasteful number, since it uses less digits than its factorization.

19938672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10678 (or 10669 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 19938672 is about 4465.2740117489. The cubic root of 19938672 is about 271.1640279122.

The spelling of 19938672 in words is "nineteen million, nine hundred thirty-eight thousand, six hundred seventy-two".