2129932128 has 96 divisors (see below), whose sum is σ = 5785178112. Its totient is φ = 685440000.

The previous prime is 2129932127. The next prime is 2129932163. The reversal of 2129932128 is 8212399212.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×2129932128² = 9073221739773216768, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129932127) 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, 2234500 + ... + 2235452.

It is an arithmetic number, because the mean of its divisors is an integer number (60262272).

Almost surely, 2^2129932128 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 2129932128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2892589056).

2129932128 is an abundant number, since it is smaller than the sum of its proper divisors (3655245984).

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

2129932128 is a wasteful number, since it uses less digits than its factorization.

2129932128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748 (or 1740 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 2129932128 is about 46151.1877203610. The cubic root of 2129932128 is about 1286.6346848193.

The spelling of 2129932128 in words is "two billion, one hundred twenty-nine million, nine hundred thirty-two thousand, one hundred twenty-eight".