2129328 has 100 divisors (see below), whose sum is σ = 6481728. Its totient is φ = 673920.

The previous prime is 2129321. The next prime is 2129329. The reversal of 2129328 is 8239212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (2129321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40150 + ... + 40202.

2^2129328 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 2129328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3240864).

2129328 is an abundant number, since it is smaller than the sum of its proper divisors (4352400).

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

2129328 is a wasteful number, since it uses less digits than its factorization.

2129328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 89 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2129328 is about 1459.2217103648. The cubic root of 2129328 is about 128.6513027494.

It can be divided in two parts, 21293 and 28, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 2129328 in words is "two million, one hundred twenty-nine thousand, three hundred twenty-eight".