1840004 has 12 divisors (see below), whose sum is σ = 3273228. Its totient is φ = 904800.

The previous prime is 1839997. The next prime is 1840019. The reversal of 1840004 is 4000481.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 123904 + 1716100 = 352^2 + 1310^2 .

It is a super-2 number, since 2×1840004² = 6771229440032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3527 + ... + 4014.

It is an arithmetic number, because the mean of its divisors is an integer number (272769).

2^1840004 is an apocalyptic number.

It is an amenable number.

1840004 is a deficient number, since it is larger than the sum of its proper divisors (1433224).

1840004 is a wasteful number, since it uses less digits than its factorization.

1840004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7606 (or 7604 counting only the distinct ones).

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

The square root of 1840004 is about 1356.4674710438. The cubic root of 1840004 is about 122.5386023005.

Adding to 1840004 its reverse (4000481), we get a palindrome (5840485).

The spelling of 1840004 in words is "one million, eight hundred forty thousand, four".