20864162 has 16 divisors (see below), whose sum is σ = 34975584. Its totient is φ = 9252000.

The previous prime is 20864161. The next prime is 20864171. The reversal of 20864162 is 26146802.

It is not an unprimeable number, because it can be changed into a prime (20864161) 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 7 ways as a sum of consecutive naturals, for example, 10664 + ... + 12467.

It is an arithmetic number, because the mean of its divisors is an integer number (2185974).

Almost surely, 2^20864162 is an apocalyptic number.

20864162 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20864162 is a deficient number, since it is larger than the sum of its proper divisors (14111422).

20864162 is a wasteful number, since it uses less digits than its factorization.

20864162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23185.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20864162 is about 4567.7305086881. The cubic root of 20864162 is about 275.2962625345.

The spelling of 20864162 in words is "twenty million, eight hundred sixty-four thousand, one hundred sixty-two".