1350440 has 96 divisors (see below), whose sum is σ = 3878280. Its totient is φ = 419328.

The previous prime is 1350403. The next prime is 1350449. The reversal of 1350440 is 440531.

It can be written as a sum of positive squares in 4 ways, for example, as 988036 + 362404 = 994^2 + 602^2 .

It is not an unprimeable number, because it can be changed into a prime (1350449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25454 + ... + 25506.

2^1350440 is an apocalyptic number.

1350440 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 1350440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939140).

1350440 is an abundant number, since it is smaller than the sum of its proper divisors (2527840).

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

1350440 is a wasteful number, since it uses less digits than its factorization.

1350440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1350440 is about 1162.0843342890. The cubic root of 1350440 is about 110.5329508687.

Adding to 1350440 its reverse (440531), we get a palindrome (1790971).

Subtracting from 1350440 its reverse (440531), we obtain a palindrome (909909).

The spelling of 1350440 in words is "one million, three hundred fifty thousand, four hundred forty".