1441840 has 40 divisors (see below), whose sum is σ = 3414960. Its totient is φ = 566016.

The previous prime is 1441837. The next prime is 1441849. The reversal of 1441840 is 481441.

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1441849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5226 + ... + 5494.

It is an arithmetic number, because the mean of its divisors is an integer number (85374).

2^1441840 is an apocalyptic number.

1441840 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 1441840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1707480).

1441840 is an abundant number, since it is smaller than the sum of its proper divisors (1973120).

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

1441840 is a wasteful number, since it uses less digits than its factorization.

1441840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 1441840 is about 1200.7664219156. The cubic root of 1441840 is about 112.9724003914.

The spelling of 1441840 in words is "one million, four hundred forty-one thousand, eight hundred forty".