20916166 has 8 divisors (see below), whose sum is σ = 31752504. Its totient is φ = 10332000.

The previous prime is 20916151. The next prime is 20916197. The reversal of 20916166 is 66161902.

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

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, 62835 + ... + 63166.

It is an arithmetic number, because the mean of its divisors is an integer number (3969063).

Almost surely, 2^20916166 is an apocalyptic number.

20916166 is a deficient number, since it is larger than the sum of its proper divisors (10836338).

20916166 is a wasteful number, since it uses less digits than its factorization.

20916166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126086.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 20916166 is about 4573.4195084204. The cubic root of 20916166 is about 275.5247984107.

The spelling of 20916166 in words is "twenty million, nine hundred sixteen thousand, one hundred sixty-six".