20322160 has 20 divisors (see below), whose sum is σ = 47249208. Its totient is φ = 8128832.

The previous prime is 20322131. The next prime is 20322163. The reversal of 20322160 is 6122302.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126934 + ... + 127093.

Almost surely, 2^20322160 is an apocalyptic number.

20322160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20322160 is an abundant number, since it is smaller than the sum of its proper divisors (26927048).

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

20322160 is a wasteful number, since it uses less digits than its factorization.

20322160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254040 (or 254034 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20322160 is about 4508.0106477248. The cubic root of 20322160 is about 272.8914666500.

Adding to 20322160 its reverse (6122302), we get a palindrome (26444462).

The spelling of 20322160 in words is "twenty million, three hundred twenty-two thousand, one hundred sixty".