2144220040 has 32 divisors (see below), whose sum is σ = 4878711000. Its totient is φ = 848049664.

The previous prime is 2144220037. The next prime is 2144220049. The reversal of 2144220040 is 400224412.

It can be written as a sum of positive squares in 4 ways, for example, as 1875063204 + 269156836 = 43302^2 + 16406^2 .

It is not an unprimeable number, because it can be changed into a prime (2144220049) 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, 297595 + ... + 304714.

Almost surely, 2^2144220040 is an apocalyptic number.

2144220040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144220040 is an abundant number, since it is smaller than the sum of its proper divisors (2734490960).

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

2144220040 is a wasteful number, since it uses less digits than its factorization.

2144220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602409 (or 602405 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2144220040 is about 46305.7236203042. The cubic root of 2144220040 is about 1289.5052566668.

Adding to 2144220040 its reverse (400224412), we get a palindrome (2544444452).

The spelling of 2144220040 in words is "two billion, one hundred forty-four million, two hundred twenty thousand, forty".