1306240266 has 16 divisors (see below), whose sum is σ = 2628126144. Its totient is φ = 432805824.

The previous prime is 1306240261. The next prime is 1306240277. The reversal of 1306240266 is 6620426031.

It is a super-3 number, since 3×1306240266³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1306240261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650815 + ... + 652818.

It is an arithmetic number, because the mean of its divisors is an integer number (164257884).

Almost surely, 2^1306240266 is an apocalyptic number.

1306240266 is an abundant number, since it is smaller than the sum of its proper divisors (1321885878).

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

1306240266 is a wasteful number, since it uses less digits than its factorization.

1306240266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303805.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 1306240266 is about 36141.9460737797. The cubic root of 1306240266 is about 1093.1363993364.

Adding to 1306240266 its reverse (6620426031), we get a palindrome (7926666297).

The spelling of 1306240266 in words is "one billion, three hundred six million, two hundred forty thousand, two hundred sixty-six".