1840044 has 12 divisors (see below), whose sum is σ = 4293464. Its totient is φ = 613344.

The previous prime is 1840043. The next prime is 1840049. The reversal of 1840044 is 4400481.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1840044.

It is not an unprimeable number, because it can be changed into a prime (1840043) 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, 76657 + ... + 76680.

2^1840044 is an apocalyptic number.

It is an amenable number.

1840044 is an abundant number, since it is smaller than the sum of its proper divisors (2453420).

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

1840044 is a wasteful number, since it uses less digits than its factorization.

1840044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153344 (or 153342 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1840044 is about 1356.4822151433. The cubic root of 1840044 is about 122.5394902530.

The spelling of 1840044 in words is "one million, eight hundred forty thousand, forty-four".