20162560 has 96 divisors (see below), whose sum is σ = 53071200. Its totient is φ = 7290880.

The previous prime is 20162557. The next prime is 20162567. The reversal of 20162560 is 6526102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20162567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112551 + ... + 112729.

It is an arithmetic number, because the mean of its divisors is an integer number (552825).

Almost surely, 2^20162560 is an apocalyptic number.

20162560 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 20162560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26535600).

20162560 is an abundant number, since it is smaller than the sum of its proper divisors (32908640).

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

20162560 is a wasteful number, since it uses less digits than its factorization.

20162560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20162560 is about 4490.2739337372. The cubic root of 20162560 is about 272.1752043065.

Adding to 20162560 its reverse (6526102), we get a palindrome (26688662).

The spelling of 20162560 in words is "twenty million, one hundred sixty-two thousand, five hundred sixty".