20932168 has 16 divisors (see below), whose sum is σ = 41556780. Its totient is φ = 9850368.

The previous prime is 20932159. The next prime is 20932169. The reversal of 20932168 is 86123902.

It can be written as a sum of positive squares in 2 ways, for example, as 20593444 + 338724 = 4538^2 + 582^2 .

It is not an unprimeable number, because it can be changed into a prime (20932169) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 76821 + ... + 77092.

Almost surely, 2^20932168 is an apocalyptic number.

It is an amenable number.

20932168 is a deficient number, since it is larger than the sum of its proper divisors (20624612).

20932168 is a wasteful number, since it uses less digits than its factorization.

20932168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153936 (or 153932 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20932168 is about 4575.1686307720. The cubic root of 20932168 is about 275.5950442984.

The spelling of 20932168 in words is "twenty million, nine hundred thirty-two thousand, one hundred sixty-eight".