1306450 has 48 divisors (see below), whose sum is σ = 2711880. Its totient is φ = 465920.

The previous prime is 1306447. The next prime is 1306451. The reversal of 1306450 is 546031.

It is a Cunningham number, because it is equal to 1143²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 328329 + 978121 = 573^2 + 989^2 .

It is not an unprimeable number, because it can be changed into a prime (1306451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24624 + ... + 24676.

2^1306450 is an apocalyptic number.

1306450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1306450 is an abundant number, since it is smaller than the sum of its proper divisors (1405430).

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

1306450 is a wasteful number, since it uses less digits than its factorization.

1306450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1306450 is about 1143.0004374452. Note that the first 3 decimals coincide. The cubic root of 1306450 is about 109.3194901999.

The spelling of 1306450 in words is "one million, three hundred six thousand, four hundred fifty".