20133166 has 4 divisors (see below), whose sum is σ = 30199752. Its totient is φ = 10066582.

The previous prime is 20133149. The next prime is 20133193. The reversal of 20133166 is 66133102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5033290 + ... + 5033293.

It is an arithmetic number, because the mean of its divisors is an integer number (7549938).

Almost surely, 2^20133166 is an apocalyptic number.

20133166 is a deficient number, since it is larger than the sum of its proper divisors (10066586).

20133166 is a wasteful number, since it uses less digits than its factorization.

20133166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10066585.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20133166 is about 4486.9996657009. Note that the first 3 decimals coincide. The cubic root of 20133166 is about 272.0428763868.

Adding to 20133166 its reverse (66133102), we get a palindrome (86266268).

The spelling of 20133166 in words is "twenty million, one hundred thirty-three thousand, one hundred sixty-six".