1822004 has 12 divisors (see below), whose sum is σ = 3201828. Its totient is φ = 907200.

The previous prime is 1822003. The next prime is 1822013. The reversal of 1822004 is 4002281.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 504100 = 1148^2 + 710^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822003) 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, 314 + ... + 1934.

It is an arithmetic number, because the mean of its divisors is an integer number (266819).

2^1822004 is an apocalyptic number.

It is an amenable number.

1822004 is a deficient number, since it is larger than the sum of its proper divisors (1379824).

1822004 is a wasteful number, since it uses less digits than its factorization.

1822004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906 (or 1904 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1822004 is about 1349.8162837957. The cubic root of 1822004 is about 122.1377106620.

Adding to 1822004 its reverse (4002281), we get a palindrome (5824285).

It can be divided in two parts, 18 and 22004, that added together give a palindrome (22022).

The spelling of 1822004 in words is "one million, eight hundred twenty-two thousand, four".