1340556540 has 48 divisors (see below), whose sum is σ = 3762339840. Its totient is φ = 356645440.

The previous prime is 1340556527. The next prime is 1340556563. The reversal of 1340556540 is 456550431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60 + ... + 51779.

It is an arithmetic number, because the mean of its divisors is an integer number (78382080).

Almost surely, 2^1340556540 is an apocalyptic number.

1340556540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340556540 is an abundant number, since it is smaller than the sum of its proper divisors (2421783300).

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

1340556540 is a wasteful number, since it uses less digits than its factorization.

1340556540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52282 (or 52280 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 1340556540 is about 36613.6114034112. The cubic root of 1340556540 is about 1102.6263798646.

The spelling of 1340556540 in words is "one billion, three hundred forty million, five hundred fifty-six thousand, five hundred forty".