2128470912 has 128 divisors (see below), whose sum is σ = 6484915200. Its totient is φ = 686568960.

The previous prime is 2128470893. The next prime is 2128470913. The reversal of 2128470912 is 2190748212.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×2128470912² = 9060776846460223488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128470913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97203 + ... + 117069.

It is an arithmetic number, because the mean of its divisors is an integer number (50663400).

Almost surely, 2^2128470912 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 2128470912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3242457600).

2128470912 is an abundant number, since it is smaller than the sum of its proper divisors (4356444288).

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

2128470912 is a wasteful number, since it uses less digits than its factorization.

2128470912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19921 (or 19903 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2128470912 is about 46135.3542524602. The cubic root of 2128470912 is about 1286.3403904212.

The spelling of 2128470912 in words is "two billion, one hundred twenty-eight million, four hundred seventy thousand, nine hundred twelve".