19986272 has 24 divisors (see below), whose sum is σ = 39450600. Its totient is φ = 9967104.

The previous prime is 19986269. The next prime is 19986283. The reversal of 19986272 is 27268991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19304 + ... + 20312.

It is an arithmetic number, because the mean of its divisors is an integer number (1643775).

Almost surely, 2^19986272 is an apocalyptic number.

It is an amenable number.

19986272 is a deficient number, since it is larger than the sum of its proper divisors (19464328).

19986272 is a wasteful number, since it uses less digits than its factorization.

19986272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 1630 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 19986272 is about 4470.6008544714. The cubic root of 19986272 is about 271.3796415692.

The spelling of 19986272 in words is "nineteen million, nine hundred eighty-six thousand, two hundred seventy-two".