2126823828 has 72 divisors (see below), whose sum is σ = 5286540000. Its totient is φ = 665359872.

The previous prime is 2126823821. The next prime is 2126823841. The reversal of 2126823828 is 8283286212.

It is a self number, because there is not a number n which added to its sum of digits gives 2126823828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126823821) 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, 1729918 + ... + 1731146.

Almost surely, 2^2126823828 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 2126823828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2643270000).

2126823828 is an abundant number, since it is smaller than the sum of its proper divisors (3159716172).

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

2126823828 is a wasteful number, since it uses less digits than its factorization.

2126823828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769 (or 1750 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 2126823828 is about 46117.5002358107. The cubic root of 2126823828 is about 1286.0084999845.

The spelling of 2126823828 in words is "two billion, one hundred twenty-six million, eight hundred twenty-three thousand, eight hundred twenty-eight".