2128403952 has 120 divisors (see below), whose sum is σ = 6376814080. Its totient is φ = 686543040.

The previous prime is 2128403951. The next prime is 2128404011. The reversal of 2128403952 is 2593048212.

It is a happy number.

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 (2128403951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111699 + ... + 129357.

Almost surely, 2^2128403952 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 2128403952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3188407040).

2128403952 is an abundant number, since it is smaller than the sum of its proper divisors (4248410128).

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

2128403952 is a wasteful number, since it uses less digits than its factorization.

2128403952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17713 (or 17695 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2128403952 is about 46134.6285559990. The cubic root of 2128403952 is about 1286.3269011983.

The spelling of 2128403952 in words is "two billion, one hundred twenty-eight million, four hundred three thousand, nine hundred fifty-two".