1839040 has 56 divisors (see below), whose sum is σ = 5010912. Its totient is φ = 629760.

The previous prime is 1839001. The next prime is 1839059. The reversal of 1839040 is 409381.

It is a tau number, because it is divible by the number of its divisors (56).

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1838996 and 1839014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1830 + ... + 2650.

2^1839040 is an apocalyptic number.

1839040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1839040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2505456).

1839040 is an abundant number, since it is smaller than the sum of its proper divisors (3171872).

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

1839040 is an equidigital number, since it uses as much as digits as its factorization.

1839040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1839040 is about 1356.1120897625. The cubic root of 1839040 is about 122.5171987514.

The spelling of 1839040 in words is "one million, eight hundred thirty-nine thousand, forty".