1205480 has 16 divisors (see below), whose sum is σ = 2712420. Its totient is φ = 482176.

The previous prime is 1205473. The next prime is 1205489. The reversal of 1205480 is 845021.

It can be written as a sum of positive squares in 2 ways, for example, as 1085764 + 119716 = 1042^2 + 346^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1205489) 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, 15029 + ... + 15108.

2^1205480 is an apocalyptic number.

1205480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205480 is an abundant number, since it is smaller than the sum of its proper divisors (1506940).

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

1205480 is a wasteful number, since it uses less digits than its factorization.

1205480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30148 (or 30144 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1205480 is about 1097.9435322456. The cubic root of 1205480 is about 106.4273715549.

The spelling of 1205480 in words is "one million, two hundred five thousand, four hundred eighty".