1828839 has 4 divisors (see below), whose sum is σ = 2438456. Its totient is φ = 1219224.

The previous prime is 1828831. The next prime is 1828847. The reversal of 1828839 is 9388281.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1828831) and next prime (1828847).

It is not a de Polignac number, because 1828839 - 2³ = 1828831 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1828797 and 1828806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1828831) 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, 304804 + ... + 304809.

It is an arithmetic number, because the mean of its divisors is an integer number (609614).

2^1828839 is an apocalyptic number.

1828839 is a deficient number, since it is larger than the sum of its proper divisors (609617).

1828839 is an equidigital number, since it uses as much as digits as its factorization.

1828839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609616.

The product of its digits is 27648, while the sum is 39.

The square root of 1828839 is about 1352.3457398166. The cubic root of 1828839 is about 122.2902477456.

The spelling of 1828839 in words is "one million, eight hundred twenty-eight thousand, eight hundred thirty-nine".