20983166 has 8 divisors (see below), whose sum is σ = 31519560. Its totient is φ = 10476648.

The previous prime is 20983159. The next prime is 20983189. The reversal of 20983166 is 66138902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 5621 + ... + 8576.

It is an arithmetic number, because the mean of its divisors is an integer number (3939945).

Almost surely, 2^20983166 is an apocalyptic number.

20983166 is a deficient number, since it is larger than the sum of its proper divisors (10536394).

20983166 is a wasteful number, since it uses less digits than its factorization.

20983166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14938.

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

The square root of 20983166 is about 4580.7385867347. The cubic root of 20983166 is about 275.8186777251.

The spelling of 20983166 in words is "twenty million, nine hundred eighty-three thousand, one hundred sixty-six".