1340455648 has 48 divisors (see below), whose sum is σ = 3072958560. Its totient is φ = 563636736.

The previous prime is 1340455621. The next prime is 1340455679. The reversal of 1340455648 is 8465540431.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340455648.

It is a congruent number.

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, 44583 + ... + 68326.

It is an arithmetic number, because the mean of its divisors is an integer number (64019970).

Almost surely, 2^1340455648 is an apocalyptic number.

It is an amenable number.

1340455648 is an abundant number, since it is smaller than the sum of its proper divisors (1732502912).

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

1340455648 is a wasteful number, since it uses less digits than its factorization.

1340455648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112979 (or 112971 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 1340455648 is about 36612.2335838719. The cubic root of 1340455648 is about 1102.5987174801.

The spelling of 1340455648 in words is "one billion, three hundred forty million, four hundred fifty-five thousand, six hundred forty-eight".