1824005 has 4 divisors (see below), whose sum is σ = 2188812. Its totient is φ = 1459200.

The previous prime is 1824001. The next prime is 1824007. The reversal of 1824005 is 5004281.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1304164 + 519841 = 1142^2 + 721^2 .

It is not a de Polignac number, because 1824005 - 2² = 1824001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1824001) 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, 182396 + ... + 182405.

It is an arithmetic number, because the mean of its divisors is an integer number (547203).

2^1824005 is an apocalyptic number.

It is an amenable number.

1824005 is a deficient number, since it is larger than the sum of its proper divisors (364807).

1824005 is an equidigital number, since it uses as much as digits as its factorization.

1824005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364806.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1824005 is about 1350.5572923797. The cubic root of 1824005 is about 122.1824065289.

Adding to 1824005 its reverse (5004281), we get a palindrome (6828286).

The spelling of 1824005 in words is "one million, eight hundred twenty-four thousand, five".