2220143440 has 80 divisors (see below), whose sum is σ = 5300660736. Its totient is φ = 864281600.

The previous prime is 2220143413. The next prime is 2220143467. The reversal of 2220143440 is 443410222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2220143413) and next prime (2220143467).

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

It is a congruent number.

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, 2436585 + ... + 2437495.

Almost surely, 2^2220143440 is an apocalyptic number.

2220143440 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 2220143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2650330368).

2220143440 is an abundant number, since it is smaller than the sum of its proper divisors (3080517296).

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

2220143440 is a wasteful number, since it uses less digits than its factorization.

2220143440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2220143440 is about 47118.3981051988. The cubic root of 2220143440 is about 1304.5488455800.

Adding to 2220143440 its reverse (443410222), we get a palindrome (2663553662).

The spelling of 2220143440 in words is "two billion, two hundred twenty million, one hundred forty-three thousand, four hundred forty".