1306640076 has 36 divisors (see below), whose sum is σ = 3546596088. Its totient is φ = 373325568.

The previous prime is 1306640059. The next prime is 1306640087. The reversal of 1306640076 is 6700466031.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1110501 + ... + 1111676.

It is an arithmetic number, because the mean of its divisors is an integer number (98516558).

Almost surely, 2^1306640076 is an apocalyptic number.

It is an amenable number.

1306640076 is an abundant number, since it is smaller than the sum of its proper divisors (2239956012).

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

1306640076 is a wasteful number, since it uses less digits than its factorization.

1306640076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222198 (or 2222189 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 1306640076 is about 36147.4767584129. The cubic root of 1306640076 is about 1093.2479159011.

The spelling of 1306640076 in words is "one billion, three hundred six million, six hundred forty thousand, seventy-six".