1340320 has 24 divisors (see below), whose sum is σ = 3166884. Its totient is φ = 536064.

The previous prime is 1340291. The next prime is 1340321. The reversal of 1340320 is 230431.

It can be written as a sum of positive squares in 2 ways, for example, as 1245456 + 94864 = 1116^2 + 308^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1340320.

It is not an unprimeable number, because it can be changed into a prime (1340321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4029 + ... + 4348.

2^1340320 is an apocalyptic number.

1340320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340320 is an abundant number, since it is smaller than the sum of its proper divisors (1826564).

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

1340320 is an equidigital number, since it uses as much as digits as its factorization.

1340320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8392 (or 8384 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1340320 is about 1157.7219009762. The cubic root of 1340320 is about 110.2561523571.

Adding to 1340320 its reverse (230431), we get a palindrome (1570751).

The spelling of 1340320 in words is "one million, three hundred forty thousand, three hundred twenty".