1306386 has 12 divisors (see below), whose sum is σ = 2830542. Its totient is φ = 435456.

The previous prime is 1306381. The next prime is 1306387. The reversal of 1306386 is 6836031.

It can be written as a sum of positive squares in only one way, i.e., 1279161 + 27225 = 1131^2 + 165^2 .

It is not an unprimeable number, because it can be changed into a prime (1306381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36271 + ... + 36306.

2^1306386 is an apocalyptic number.

1306386 is an abundant number, since it is smaller than the sum of its proper divisors (1524156).

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

1306386 is a wasteful number, since it uses less digits than its factorization.

1306386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72585 (or 72582 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1306386 is about 1142.9724406126. The cubic root of 1306386 is about 109.3177050667.

The spelling of 1306386 in words is "one million, three hundred six thousand, three hundred eighty-six".