220600040240 has 80 divisors (see below), whose sum is σ = 517252179456. Its totient is φ = 87492960000.

The previous prime is 220600040209. The next prime is 220600040273. The reversal of 220600040240 is 42040006022.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5600615 + ... + 5639865.

Almost surely, 2^220600040240 is an apocalyptic number.

220600040240 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 220600040240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258626089728).

220600040240 is an abundant number, since it is smaller than the sum of its proper divisors (296652139216).

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

220600040240 is a wasteful number, since it uses less digits than its factorization.

220600040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39858 (or 39852 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 220600040240 its reverse (42040006022), we get a palindrome (262640046262).

The spelling of 220600040240 in words is "two hundred twenty billion, six hundred million, forty thousand, two hundred forty".