2102443440 has 80 divisors (see below), whose sum is σ = 6590872800. Its totient is φ = 554346496.

The previous prime is 2102443417. The next prime is 2102443459. The reversal of 2102443440 is 443442012.

It is a happy number.

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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2102443440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27855 + ... + 70574.

It is an arithmetic number, because the mean of its divisors is an integer number (82385910).

Almost surely, 2^2102443440 is an apocalyptic number.

2102443440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102443440 is an abundant number, since it is smaller than the sum of its proper divisors (4488429360).

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

2102443440 is a wasteful number, since it uses less digits than its factorization.

2102443440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98534 (or 98528 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2102443440 is about 45852.4093151058. The cubic root of 2102443440 is about 1281.0756420599.

Adding to 2102443440 its reverse (443442012), we get a palindrome (2545885452).

The spelling of 2102443440 in words is "two billion, one hundred two million, four hundred forty-three thousand, four hundred forty".