1340448 has 24 divisors (see below), whose sum is σ = 3518928. Its totient is φ = 446784.

The previous prime is 1340447. The next prime is 1340459. The reversal of 1340448 is 8440431.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1340441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6886 + ... + 7077.

It is an arithmetic number, because the mean of its divisors is an integer number (146622).

2^1340448 is an apocalyptic number.

It is an amenable number.

1340448 is an abundant number, since it is smaller than the sum of its proper divisors (2178480).

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

1340448 is a wasteful number, since it uses less digits than its factorization.

1340448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13976 (or 13968 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1340448 is about 1157.7771806354. Note that the first 3 decimals coincide. The cubic root of 1340448 is about 110.2596620509.

Adding to 1340448 its reverse (8440431), we get a palindrome (9780879).

The spelling of 1340448 in words is "one million, three hundred forty thousand, four hundred forty-eight".