1322440 has 32 divisors (see below), whose sum is σ = 3401280. Its totient is φ = 453312.

The previous prime is 1322437. The next prime is 1322443. The reversal of 1322440 is 442231.

It is an interprime number because it is at equal distance from previous prime (1322437) and next prime (1322443).

It is not an unprimeable number, because it can be changed into a prime (1322443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2082 + ... + 2641.

It is an arithmetic number, because the mean of its divisors is an integer number (106290).

2^1322440 is an apocalyptic number.

1322440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322440 is an abundant number, since it is smaller than the sum of its proper divisors (2078840).

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

1322440 is a wasteful number, since it uses less digits than its factorization.

1322440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741 (or 4737 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1322440 is about 1149.9739127476. The cubic root of 1322440 is about 109.7636799901.

Adding to 1322440 its reverse (442231), we get a palindrome (1764671).

The spelling of 1322440 in words is "one million, three hundred twenty-two thousand, four hundred forty".