19821332 has 12 divisors (see below), whose sum is σ = 36513120. Its totient is φ = 9389016.

The previous prime is 19821299. The next prime is 19821349. The reversal of 19821332 is 23312891.

It is a junction number, because it is equal to n+sod(n) for n = 19821295 and 19821304.

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, 130328 + ... + 130479.

It is an arithmetic number, because the mean of its divisors is an integer number (3042760).

Almost surely, 2^19821332 is an apocalyptic number.

It is an amenable number.

19821332 is a deficient number, since it is larger than the sum of its proper divisors (16691788).

19821332 is a wasteful number, since it uses less digits than its factorization.

19821332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260830 (or 260828 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 19821332 is about 4452.1154522317. The cubic root of 19821332 is about 270.6310434107.

The spelling of 19821332 in words is "nineteen million, eight hundred twenty-one thousand, three hundred thirty-two".