1306320 has 40 divisors (see below), whose sum is σ = 4050336. Its totient is φ = 348288.

The previous prime is 1306313. The next prime is 1306339. The reversal of 1306320 is 236031.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1306320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2482 + ... + 2961.

2^1306320 is an apocalyptic number.

1306320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1306320 is an abundant number, since it is smaller than the sum of its proper divisors (2744016).

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

1306320 is a wasteful number, since it uses less digits than its factorization.

1306320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459 (or 5453 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1306320 is about 1142.9435681607. The cubic root of 1306320 is about 109.3158640871.

The spelling of 1306320 in words is "one million, three hundred six thousand, three hundred twenty".