12345530 has 16 divisors (see below), whose sum is σ = 22264200. Its totient is φ = 4928832.

The previous prime is 12345527. The next prime is 12345539. The reversal of 12345530 is 3554321.

12345530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8934121 + 3411409 = 2989^2 + 1847^2 .

It is a super-2 number, since 2×12345530² = 304824221961800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12345496 and 12345505.

It is not an unprimeable number, because it can be changed into a prime (12345539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7196 + ... + 8744.

Almost surely, 2^12345530 is an apocalyptic number.

12345530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12345530 is a deficient number, since it is larger than the sum of its proper divisors (9918670).

12345530 is a wasteful number, since it uses less digits than its factorization.

12345530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 12345530 is about 3513.6206397390. The cubic root of 12345530 is about 231.1194949053.

Adding to 12345530 its reverse (3554321), we get a palindrome (15899851).

The spelling of 12345530 in words is "twelve million, three hundred forty-five thousand, five hundred thirty".