1206530 has 16 divisors (see below), whose sum is σ = 2339064. Its totient is φ = 445440.

The previous prime is 1206529. The next prime is 1206539. The reversal of 1206530 is 356021.

It can be written as a sum of positive squares in 4 ways, for example, as 994009 + 212521 = 997^2 + 461^2 .

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1206499 and 1206508.

It is not an unprimeable number, because it can be changed into a prime (1206539) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4511 + ... + 4770.

2^1206530 is an apocalyptic number.

1206530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1206530 is a deficient number, since it is larger than the sum of its proper divisors (1132534).

1206530 is a wasteful number, since it uses less digits than its factorization.

1206530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9301.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1206530 is about 1098.4215948351. The cubic root of 1206530 is about 106.4582627934.

The spelling of 1206530 in words is "one million, two hundred six thousand, five hundred thirty".