20982392 has 8 divisors (see below), whose sum is σ = 39342000. Its totient is φ = 10491192.

The previous prime is 20982389. The next prime is 20982397. The reversal of 20982392 is 29328902.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20982397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1311392 + ... + 1311407.

It is an arithmetic number, because the mean of its divisors is an integer number (4917750).

Almost surely, 2^20982392 is an apocalyptic number.

It is an amenable number.

20982392 is a deficient number, since it is larger than the sum of its proper divisors (18359608).

20982392 is a wasteful number, since it uses less digits than its factorization.

20982392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622805 (or 2622801 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 20982392 is about 4580.6541017632. The cubic root of 20982392 is about 275.8152863354.

The spelling of 20982392 in words is "twenty million, nine hundred eighty-two thousand, three hundred ninety-two".