1306808 has 8 divisors (see below), whose sum is σ = 2450280. Its totient is φ = 653400.

The previous prime is 1306777. The next prime is 1306817. The reversal of 1306808 is 8086031.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81668 + ... + 81683.

It is an arithmetic number, because the mean of its divisors is an integer number (306285).

2^1306808 is an apocalyptic number.

It is an amenable number.

1306808 is a deficient number, since it is larger than the sum of its proper divisors (1143472).

1306808 is a wasteful number, since it uses less digits than its factorization.

1306808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163357 (or 163353 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1306808 is about 1143.1570320826. The cubic root of 1306808 is about 109.3294747134.

The spelling of 1306808 in words is "one million, three hundred six thousand, eight hundred eight".