2220040000 has 70 divisors (see below), whose sum is σ = 5505076874. Its totient is φ = 888000000.

The previous prime is 2220039961. The next prime is 2220040007. The reversal of 2220040000 is 400222.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 514019584 + 1706020416 = 22672^2 + 41304^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220040007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12250 + ... + 67750.

Almost surely, 2^2220040000 is an apocalyptic number.

2220040000 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 2220040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2752538437).

2220040000 is an abundant number, since it is smaller than the sum of its proper divisors (3285036874).

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

2220040000 is an frugal number, since it uses more digits than its factorization.

2220040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55533 (or 55508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 2220040000 is about 47117.3004320069. The cubic root of 2220040000 is about 1304.5285849329.

Adding to 2220040000 its reverse (400222), we get a palindrome (2220440222).

The spelling of 2220040000 in words is "two billion, two hundred twenty million, forty thousand".