1306540056 has 16 divisors (see below), whose sum is σ = 3266350200. Its totient is φ = 435513344.

The previous prime is 1306540021. The next prime is 1306540087. The reversal of 1306540056 is 6500456031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27219561 + ... + 27219608.

Almost surely, 2^1306540056 is an apocalyptic number.

It is an amenable number.

1306540056 is an abundant number, since it is smaller than the sum of its proper divisors (1959810144).

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

1306540056 is a wasteful number, since it uses less digits than its factorization.

1306540056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54439178 (or 54439174 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1306540056 is about 36146.0932328793. The cubic root of 1306540056 is about 1093.2200200664.

Adding to 1306540056 its reverse (6500456031), we get a palindrome (7806996087).

The spelling of 1306540056 in words is "one billion, three hundred six million, five hundred forty thousand, fifty-six".