1307320 has 96 divisors (see below), whose sum is σ = 3693600. Its totient is φ = 413952.

The previous prime is 1307311. The next prime is 1307347. The reversal of 1307320 is 237031.

It is a junction number, because it is equal to n+sod(n) for n = 1307294 and 1307303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45066 + ... + 45094.

It is an arithmetic number, because the mean of its divisors is an integer number (38475).

2^1307320 is an apocalyptic number.

1307320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1307320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846800).

1307320 is an abundant number, since it is smaller than the sum of its proper divisors (2386280).

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

1307320 is a wasteful number, since it uses less digits than its factorization.

1307320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 1307320 is about 1143.3809513893. The cubic root of 1307320 is about 109.3437510729.

The spelling of 1307320 in words is "one million, three hundred seven thousand, three hundred twenty".