20733168 has 80 divisors (see below), whose sum is σ = 55753376. Its totient is φ = 6635520.

The previous prime is 20733137. The next prime is 20733191. The reversal of 20733168 is 86133702.

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 in 15 ways as a sum of consecutive naturals, for example, 213696 + ... + 213792.

Almost surely, 2^20733168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20733168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27876688).

20733168 is an abundant number, since it is smaller than the sum of its proper divisors (35020208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20733168 is a wasteful number, since it uses less digits than its factorization.

20733168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 20733168 is about 4553.3688627213. The cubic root of 20733168 is about 274.7189105804.

The spelling of 20733168 in words is "twenty million, seven hundred thirty-three thousand, one hundred sixty-eight".