1330520 has 64 divisors (see below), whose sum is σ = 3283200. Its totient is φ = 483840.

The previous prime is 1330519. The next prime is 1330529. The reversal of 1330520 is 250331.

It is a junction number, because it is equal to n+sod(n) for n = 1330495 and 1330504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35942 + ... + 35978.

It is an arithmetic number, because the mean of its divisors is an integer number (51300).

2^1330520 is an apocalyptic number.

1330520 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 1330520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1641600).

1330520 is an abundant number, since it is smaller than the sum of its proper divisors (1952680).

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

1330520 is a wasteful number, since it uses less digits than its factorization.

1330520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 1330520 is about 1153.4816860271. The cubic root of 1330520 is about 109.9867752696.

Adding to 1330520 its reverse (250331), we get a palindrome (1580851).

The spelling of 1330520 in words is "one million, three hundred thirty thousand, five hundred twenty".