2120444440 has 32 divisors (see below), whose sum is σ = 4785187680. Its totient is φ = 845655552.

The previous prime is 2120444429. The next prime is 2120444461. The reversal of 2120444440 is 444440212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65172 + ... + 92131.

It is an arithmetic number, because the mean of its divisors is an integer number (149537115).

Almost surely, 2^2120444440 is an apocalyptic number.

2120444440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120444440 is an abundant number, since it is smaller than the sum of its proper divisors (2664743240).

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

2120444440 is a wasteful number, since it uses less digits than its factorization.

2120444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157651 (or 157647 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 2120444440 is about 46048.2837899525. The cubic root of 2120444440 is about 1284.7214221466.

Adding to 2120444440 its reverse (444440212), we get a palindrome (2564884652).

The spelling of 2120444440 in words is "two billion, one hundred twenty million, four hundred forty-four thousand, four hundred forty".