20733166 has 16 divisors (see below), whose sum is σ = 34362144. Its totient is φ = 9332224.

The previous prime is 20733137. The next prime is 20733191. The reversal of 20733166 is 66133702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12475 + ... + 14038.

It is an arithmetic number, because the mean of its divisors is an integer number (2147634).

Almost surely, 2^20733166 is an apocalyptic number.

20733166 is a deficient number, since it is larger than the sum of its proper divisors (13628978).

20733166 is a wasteful number, since it uses less digits than its factorization.

20733166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26555.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 20733166 is about 4553.3686431037. The cubic root of 20733166 is about 274.7189017469.

Adding to 20733166 its reverse (66133702), we get a palindrome (86866868).

The spelling of 20733166 in words is "twenty million, seven hundred thirty-three thousand, one hundred sixty-six".