1340305456 has 40 divisors (see below), whose sum is σ = 2969809920. Its totient is φ = 574031424.

The previous prime is 1340305363. The next prime is 1340305493. The reversal of 1340305456 is 6545030431.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218625 + ... + 224671.

It is an arithmetic number, because the mean of its divisors is an integer number (74245248).

Almost surely, 2^1340305456 is an apocalyptic number.

1340305456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1340305456 is an abundant number, since it is smaller than the sum of its proper divisors (1629504464).

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

1340305456 is a wasteful number, since it uses less digits than its factorization.

1340305456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041 (or 8035 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1340305456 is about 36610.1824087234. The cubic root of 1340305456 is about 1102.5575355401.

Adding to 1340305456 its reverse (6545030431), we get a palindrome (7885335887).

The spelling of 1340305456 in words is "one billion, three hundred forty million, three hundred five thousand, four hundred fifty-six".