1440318 has 32 divisors (see below), whose sum is σ = 3185280. Its totient is φ = 430560.

The previous prime is 1440317. The next prime is 1440349. The reversal of 1440318 is 8130441.

It is a super-2 number, since 2×1440318² = 4149031882248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1440294 and 1440303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9096 + ... + 9252.

It is an arithmetic number, because the mean of its divisors is an integer number (99540).

2^1440318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592640).

1440318 is an abundant number, since it is smaller than the sum of its proper divisors (1744962).

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

1440318 is a wasteful number, since it uses less digits than its factorization.

1440318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1440318 is about 1200.1324926857. The cubic root of 1440318 is about 112.9326353388.

Adding to 1440318 its reverse (8130441), we get a palindrome (9570759).

The spelling of 1440318 in words is "one million, four hundred forty thousand, three hundred eighteen".