1306287078 has 32 divisors (see below), whose sum is σ = 2753676000. Its totient is φ = 412478976.

The previous prime is 1306287043. The next prime is 1306287079. The reversal of 1306287078 is 8707826031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306287079) by changing a digit.

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, 61603 + ... + 80046.

It is an arithmetic number, because the mean of its divisors is an integer number (86052375).

Almost surely, 2^1306287078 is an apocalyptic number.

1306287078 is an abundant number, since it is smaller than the sum of its proper divisors (1447388922).

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

1306287078 is a wasteful number, since it uses less digits than its factorization.

1306287078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141736.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 1306287078 is about 36142.5936811403. The cubic root of 1306287078 is about 1093.1494574981.

The spelling of 1306287078 in words is "one billion, three hundred six million, two hundred eighty-seven thousand, seventy-eight".