2169828 has 60 divisors (see below), whose sum is σ = 5857852. Its totient is φ = 699840.

The previous prime is 2169821. The next prime is 2169833. The reversal of 2169828 is 8289612.

It can be written as a sum of positive squares in 2 ways, for example, as 842724 + 1327104 = 918^2 + 1152^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2169792 and 2169801.

It is not an unprimeable number, because it can be changed into a prime (2169821) 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, 11898 + ... + 12078.

2^2169828 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 2169828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2928926).

2169828 is an abundant number, since it is smaller than the sum of its proper divisors (3688024).

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

2169828 is a wasteful number, since it uses less digits than its factorization.

2169828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 223 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2169828 is about 1473.0336045047. The cubic root of 2169828 is about 129.4618383602.

The spelling of 2169828 in words is "two million, one hundred sixty-nine thousand, eight hundred twenty-eight".