1310720 has 38 divisors (see below), whose sum is σ = 3145722. Its totient is φ = 524288.

The previous prime is 1310719. The next prime is 1310723. The reversal of 1310720 is 270131.

It can be written as a sum of positive squares in only one way, i.e., 1048576 + 262144 = 1024^2 + 512^2 .

It is a nialpdrome in base 4 and base 8.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 1310695 and 1310704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (2) of ones.

In principle, a polygon with 1310720 sides can be constructed with ruler and compass.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262142 + ... + 262146.

2^1310720 is an apocalyptic number.

1310720 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 1310720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572861).

1310720 is an abundant number, since it is smaller than the sum of its proper divisors (1835002).

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

1310720 is an frugal number, since it uses more digits than its factorization.

1310720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 1310720 is about 1144.8668044799. The cubic root of 1310720 is about 109.4384605873.

Adding to 1310720 its reverse (270131), we get a palindrome (1580851).

The spelling of 1310720 in words is "one million, three hundred ten thousand, seven hundred twenty".