2128451744 has 48 divisors (see below), whose sum is σ = 4421047680. Its totient is φ = 1005903360.

The previous prime is 2128451707. The next prime is 2128451749. The reversal of 2128451744 is 4471548212.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 2128451698 and 2128451707.

It is not an unprimeable number, because it can be changed into a prime (2128451749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 277724 + ... + 285284.

It is an arithmetic number, because the mean of its divisors is an integer number (92105160).

Almost surely, 2^2128451744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2128451744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2210523840).

2128451744 is an abundant number, since it is smaller than the sum of its proper divisors (2292595936).

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

2128451744 is a wasteful number, since it uses less digits than its factorization.

2128451744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8053 (or 8045 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 2128451744 is about 46135.1465154279. The cubic root of 2128451744 is about 1286.3365290190.

Adding to 2128451744 its reverse (4471548212), we get a palindrome (6599999956).

The spelling of 2128451744 in words is "two billion, one hundred twenty-eight million, four hundred fifty-one thousand, seven hundred forty-four".