2129828 has 12 divisors (see below), whose sum is σ = 3946572. Its totient is φ = 1002240.

The previous prime is 2129821. The next prime is 2129837. The reversal of 2129828 is 8289212.

2129828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1420864 + 708964 = 1192^2 + 842^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2129794 and 2129803.

It is not an unprimeable number, because it can be changed into a prime (2129821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15593 + ... + 15728.

It is an arithmetic number, because the mean of its divisors is an integer number (328881).

2^2129828 is an apocalyptic number.

It is an amenable number.

2129828 is a deficient number, since it is larger than the sum of its proper divisors (1816744).

2129828 is a wasteful number, since it uses less digits than its factorization.

2129828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31342 (or 31340 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 2129828 is about 1459.3930245140. The cubic root of 2129828 is about 128.6613717503.

The spelling of 2129828 in words is "two million, one hundred twenty-nine thousand, eight hundred twenty-eight".