2131828 has 12 divisors (see below), whose sum is σ = 3792292. Its totient is φ = 1048320.

The previous prime is 2131823. The next prime is 2131837. The reversal of 2131828 is 8281312.

It can be written as a sum of positive squares in 2 ways, for example, as 357604 + 1774224 = 598^2 + 1332^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4125 + ... + 4612.

2^2131828 is an apocalyptic number.

It is an amenable number.

2131828 is a deficient number, since it is larger than the sum of its proper divisors (1660464).

2131828 is a wasteful number, since it uses less digits than its factorization.

2131828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8802 (or 8800 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 2131828 is about 1460.0780801039. The cubic root of 2131828 is about 128.7016320029.

The spelling of 2131828 in words is "two million, one hundred thirty-one thousand, eight hundred twenty-eight".