20982316 has 12 divisors (see below), whose sum is σ = 36846432. Its totient is φ = 10454768.

The previous prime is 20982307. The next prime is 20982331. The reversal of 20982316 is 61328902.

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, 7780 + ... + 10123.

It is an arithmetic number, because the mean of its divisors is an integer number (3070536).

Almost surely, 2^20982316 is an apocalyptic number.

It is an amenable number.

20982316 is a deficient number, since it is larger than the sum of its proper divisors (15864116).

20982316 is a wasteful number, since it uses less digits than its factorization.

20982316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18200 (or 18198 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20982316 is about 4580.6458059972. The cubic root of 20982316 is about 275.8149533262.

The spelling of 20982316 in words is "twenty million, nine hundred eighty-two thousand, three hundred sixteen".