20522160 has 100 divisors (see below), whose sum is σ = 71299008. Its totient is φ = 5470848.

The previous prime is 20522149. The next prime is 20522197. The reversal of 20522160 is 6122502.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4897 + ... + 8063.

Almost surely, 2^20522160 is an apocalyptic number.

20522160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20522160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35649504).

20522160 is an abundant number, since it is smaller than the sum of its proper divisors (50776848).

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

20522160 is a wasteful number, since it uses less digits than its factorization.

20522160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192 (or 3177 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20522160 is about 4530.1390707130. The cubic root of 20522160 is about 273.7837638970.

Adding to 20522160 its reverse (6122502), we get a palindrome (26644662).

The spelling of 20522160 in words is "twenty million, five hundred twenty-two thousand, one hundred sixty".