1859040 has 72 divisors (see below), whose sum is σ = 6348888. Its totient is φ = 495360.

The previous prime is 1859023. The next prime is 1859041. The reversal of 1859040 is 409581.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 1858995 and 1859013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1859041) 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 11 ways as a sum of consecutive naturals, for example, 795 + ... + 2085.

It is an arithmetic number, because the mean of its divisors is an integer number (88179).

2^1859040 is an apocalyptic number.

1859040 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 1859040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3174444).

1859040 is an abundant number, since it is smaller than the sum of its proper divisors (4489848).

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

1859040 is a wasteful number, since it uses less digits than its factorization.

1859040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1859040 is about 1363.4661711975. The cubic root of 1859040 is about 122.9597330019.

The spelling of 1859040 in words is "one million, eight hundred fifty-nine thousand, forty".