2128379328 has 140 divisors (see below), whose sum is σ = 6680588112. Its totient is φ = 667699200.

The previous prime is 2128379303. The next prime is 2128379333. The reversal of 2128379328 is 8239738212.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (290304) is a multiple of the sum of its prime factors (24192).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 76053 + ... + 100203.

Almost surely, 2^2128379328 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 2128379328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3340294056).

2128379328 is an abundant number, since it is smaller than the sum of its proper divisors (4552208784).

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

2128379328 is a wasteful number, since it uses less digits than its factorization.

2128379328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24192 (or 24173 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 2128379328 is about 46134.3616841070. The cubic root of 2128379328 is about 1286.3219405742.

The spelling of 2128379328 in words is "two billion, one hundred twenty-eight million, three hundred seventy-nine thousand, three hundred twenty-eight".