220543560 has 160 divisors (see below), whose sum is σ = 758989440. Its totient is φ = 57407616.

The previous prime is 220543553. The next prime is 220543571. The reversal of 220543560 is 65345022.

220543560 is a `hidden beast` number, since 220 + 5 + 435 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 138529 + ... + 140111.

It is an arithmetic number, because the mean of its divisors is an integer number (4743684).

Almost surely, 2^220543560 is an apocalyptic number.

220543560 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 220543560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379494720).

220543560 is an abundant number, since it is smaller than the sum of its proper divisors (538445880).

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

220543560 is a wasteful number, since it uses less digits than its factorization.

220543560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 220543560 is about 14850.7090739803. The cubic root of 220543560 is about 604.1778418755.

Adding to 220543560 its reverse (65345022), we get a palindrome (285888582).

The spelling of 220543560 in words is "two hundred twenty million, five hundred forty-three thousand, five hundred sixty".