1205320 has 16 divisors (see below), whose sum is σ = 2712060. Its totient is φ = 482112.

The previous prime is 1205293. The next prime is 1205339. The reversal of 1205320 is 235021.

It can be written as a sum of positive squares in 2 ways, for example, as 1170724 + 34596 = 1082^2 + 186^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1205320.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15027 + ... + 15106.

2^1205320 is an apocalyptic number.

1205320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205320 is an abundant number, since it is smaller than the sum of its proper divisors (1506740).

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

1205320 is a wasteful number, since it uses less digits than its factorization.

1205320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30144 (or 30140 counting only the distinct ones).

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

The square root of 1205320 is about 1097.8706663355. The cubic root of 1205320 is about 106.4226627438.

Subtracting from 1205320 its reverse (235021), we obtain a cube (970299 = 99³).

The spelling of 1205320 in words is "one million, two hundred five thousand, three hundred twenty".