22160520 has 192 divisors, whose sum is σ = 79574400. Its totient is φ = 5483520.

The previous prime is 22160513. The next prime is 22160531. The reversal of 22160520 is 2506122.

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

It is a junction number, because it is equal to n+sod(n) for n = 22160493 and 22160502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 312085 + ... + 312155.

It is an arithmetic number, because the mean of its divisors is an integer number (414450).

Almost surely, 2^22160520 is an apocalyptic number.

22160520 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 22160520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39787200).

22160520 is an abundant number, since it is smaller than the sum of its proper divisors (57413880).

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

22160520 is a wasteful number, since it uses less digits than its factorization.

22160520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 98 counting only the distinct ones).

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

The square root of 22160520 is about 4707.4961497594. The cubic root of 22160520 is about 280.8837722148.

Adding to 22160520 its reverse (2506122), we get a palindrome (24666642).

The spelling of 22160520 in words is "twenty-two million, one hundred sixty thousand, five hundred twenty".