1520320 has 28 divisors (see below), whose sum is σ = 3621024. Its totient is φ = 608000.

The previous prime is 1520291. The next prime is 1520329. The reversal of 1520320 is 230251.

It is a super-2 number, since 2×1520320² = 4622745804800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1520320.

It is not an unprimeable number, because it can be changed into a prime (1520329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2056 + ... + 2695.

2^1520320 is an apocalyptic number.

1520320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520320 is an abundant number, since it is smaller than the sum of its proper divisors (2100704).

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

1520320 is an equidigital number, since it uses as much as digits as its factorization.

1520320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768 (or 4758 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1520320 is about 1233.0125709010. The cubic root of 1520320 is about 114.9860096402.

Adding to 1520320 its reverse (230251), we get a palindrome (1750571).

The spelling of 1520320 in words is "one million, five hundred twenty thousand, three hundred twenty".